Preparing for a future Microservices journey using DDD & Wardley Maps

1. Preparing For a Future Microservices Journey Using Wardley Maps Susanne Kaiser Independent Tech Consultant @suksr DDD &

2. Source: https://www.marketresearchfuture.com/reports/microservices-architecture-market-3149 Microservices Architecture Market Key Trends Loose Coupling Deployment Domain Driven Design 2016 2017 2018 2019 2020 2021 2022 2023 USD ~33 Billion MarketSize(USDBillion) CAGR ~17%

3. Source: https://www.infoq.com/articles/architecture-trends-2019/

4. Source: https://www.infoq.com/articles/architecture-trends-2019/

5. Source: https://en.wikipedia.org/wiki/Hype_cycle#/media/File:Gartner_Hype_Cycle.svg Microservices ? Gartner Hype Cycle

6. @suksr

7. @suksr High cohesion within a service Loose coupling between services

8. @suksr High cohesion within a service Loose coupling between services

9. @suksr Data Store

10. Data Store @suksr Config./Setup Maintenance Integration

11. Hardware O/S Virtualization Container Runtime @suksr

12. API Hardware O/S Virtualization Container Runtime @suksr

13. API Hardware O/S Virtualization Container Runtime @suksr APIAPI Integration

14. API Hardware O/S Virtualization Container Runtime @suksr APIAPI Security

15. API APIAPIService Discovery 1. Register 3. Connect 2. Discover Hardware O/S Virtualization Container Runtime @suksr

16. API APIAPIService Discovery Load-Balancer Hardware O/S Virtualization Container Runtime @suksr

17. API APIAPIService Discovery API Timeout-Handling Hardware O/S Virtualization Container Runtime @suksr Load-Balancer

18. API APIAPIService Discovery API Timeout-Handling Retries Hardware O/S Virtualization Container Runtime @suksr Load-Balancer

19. API APIAPIService Discovery API Timeout-Handling Retries Idempotency Hardware O/S Virtualization Container Runtime @suksr Load-Balancer

20. API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Hardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

21. API APIAPIService Discovery API Timeout-Handling Retries Bulk- Heads Circuit Breaker Hardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

22. API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Circuit Breaker Message Broker Hardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

23. API APIAPIService Discovery Load-Balancer API Timeout-Handling Retries Bulk- heads Circuit Breaker Message Broker API-Gateway Hardware O/S Virtualization Container Runtime @suksr Idempotency

24. API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Message Broker API-Gateway Circuit Breaker Config-Mngmt. Hardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

25. API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Message Broker API-Gateway Circuit Breaker Config-Mngmt. Monitoring Log Aggreation Metrics Distributed Tracing Health ChecksHardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

26. API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Message Broker API-Gateway Circuit Breaker Config-Mngmt. Monitoring Log Aggreation Metrics Distributed Tracing Health Checks SCM Checkout TestBuild CI/CD Pipeline Deploy Hardware O/S Virtualization Container Runtime @suksr Load-Balancer Idempotency

27. Recovery API APIAPIService Discovery API Timeout-Handling Retries Bulk- heads Message Broker API-Gateway Circuit Breaker Config-Mngmt. Monitoring Log Aggreation Metrics Distributed Tracing Health Checks SCM Checkout TestBuild CI/CD Pipeline Deploy Hardware O/S Virtualization Container Runtime Backup @suksr Load-Balancer Scaling Idempotency

28. µService @suksr

29. Hardware Data Store API API-Gateway Service Discovery Load-Balancer Message Broker Timeout-Handling Retries Idempotency Bulkheads Circuit Breaker Config-Mngmt. Monitoring Log Aggreation Metrics Distributed Tracing Health Checks SCM O/SVirtualization Container Runtime Checkout TestBuild CI/CD Pipeline Deploy µService Backup Recovery @suksr Scaling Maintenance Integration Security

30. Domain Driven Design (DDD) – Terminology Strategic Design Tactical Design Bounded Context Ubiquitous Language Core Subdomain Supporting Subdomain Generic Subdomain Problem Space Solution Space Context Maps Anti-Corruption Layer Shared Kernel Open Host Service Separate Ways Partnership Customer-Supplier Conformist Domain Model Entity Value Object Aggregate Repository Factory Application Service Domain Service Domain Event @suksr

31. Hardware Data Store API API-Gateway Service Discovery Load-Balancer Message Broker Timeout-Handling Retries Idempotency Bulkheads Circuit Breaker Config-Mngmt. Monitoring Log Aggreation Metrics Distributed Tracing Health Checks SCM O/SVirtualization Container Runtime Checkout TestBuild CI/CD Pipeline Deploy µService Backup Recovery Scaling Maintenance Integration Security Strategic Design Tactical Design Problem Space Solution Space Bounded Context Ubiquitous Language Core Subdomain Supporting Subdomain Generic Subdomain Context Maps Anti-Corruption Layer Shared Kernel Open Host Service Separate Ways Partnership Customer-Supplier Conformist Domain Model Entity Value Object Aggregate Repository Factory Application Service Domain Service Domain Event @suksr

32. ValueChain InvisibleVisible Evolution Visualisation of a value chain’s evolution Genesis Custom-Built Product (+rental) Commodity (+utility) Position Movement Wardley Maps BY SIMON WARDLEY Uncharted Industrialised @suksr

33. Wardley Maps – VALUE CHAIN Who are your users? ValueChain InvisibleVisible @suksr

34. Wardley Maps – VALUE CHAIN Who are your users? What are your users’ needs? ValueChain InvisibleVisible @suksr

35. Wardley Maps – VALUE CHAIN Who are your users? What are your users’ needs? What are the components/activities to fulfill your users’ needs incl. dependencies? ValueChain InvisibleVisible Position @suksr

36. Wardley Maps – LANDSCAPE ValueChain InvisibleVisible Evolution Components along evolution axes Genesis Custom-Built Product (+rental) Commodity (+utility) Position Movement @suksr

37. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Everything evolves Past Current Future Supply CompetitionDemand Competition Uncharted Industrialised Wardley Maps – PATTERNS Movement @suksr

38. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Everything evolves Past Current Future Continuous adaption Wardley Maps – PATTERNS Movement Evolution @suksr

39. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Past Current Future Characteristics changeUncharted Undefined market Uncertain Unpredictable Rare Poorly understood Forming market Learning on use Increasing understanding Slowly increasing consumption Rapid increases in learning Growing market Learning on operation Increasing education Rapidly increasing consumption Rapid increase in use Mature market Known / accepted Stable Widespread and stabilising Commonly understood (in term of use) Industrialised Wardley Maps – PATTERNS Movement @suksr

40. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Efficiency enables innovation Uncharted Industrialised Wardley Maps – PATTERNS Movement @suksr

41. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Efficiency enables innovation Uncharted Industrialised Wardley Maps – PATTERNS Movement @suksr

42. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Efficiency enables innovation Uncharted Industrialised Wardley Maps – PATTERNS Movement @suksr

43. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Efficiency enables innovation Uncharted Industrialised Wardley Maps – PATTERNS Movement @suksr

44. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Wardley Maps – PRINCIPLES Use appropriate methods per evolution stage Build in-house Use/buy off-the-shelf product Outsource to utility suppliers @suksr

45. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Use appropriate methods per evolution stage Wardley Maps – PRINCIPLES Build in-house Use/buy off-the-shelf product Outsource to utility suppliers @suksr

46. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Use appropriate methods per evolution stage Wardley Maps – PRINCIPLES Build in-house Use/buy off-the-shelf product Outsource to utility suppliers @suksr

47. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Know your users & focus on user needs Wardley Maps – PRINCIPLES Build in-house / Agile Use/buy off-the-shelf product / Lean Outsource to utility suppliers / Six Sigma @suksr

48. Domain Driven Design Ubiquitous Language Domain Knowledge Understanding the problem domain first before solving it Problem Domain Domain Experts Development Teams Collaboration @suksr

49. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution DDD & Wardley Maps Problem Domain Strategic Design DDD Patterns & Practices Tactical Design @suksr StrategicDesignTacticalDesign

50. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution DDD & Wardley Maps Problem Domain Strategic Design DDD Patterns & Practices Tactical Design Analysing the business domain Discovering Subdomains Problem Space @suksr ProblemSpace StrategicDesignTacticalDesign Analyse&Discover

51. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution DDD & Wardley Maps Problem Domain Strategic Design DDD Patterns & Practices Tactical Design Analysing the business domain Discovering Subdomains Problem Space Decomposing into modular components (Bounded Contexts (BC)) Mapping interaction patterns between BC (Context Maps) Solution Space @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Analyse&DiscoverDecompose& Map High-Level Design Decisions

52. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution DDD & Wardley Maps Problem Domain Strategic Design DDD Patterns & Practices Tactical Design Architecting a solution fitting the problem domain as closely as possible Provides building blocks to implement domain model Analysing the business domain Discovering Subdomains Problem Space Decomposing into modular components (Bounded Contexts (BC) Mapping interaction patterns between BC (Context Maps) Solution Space @suksr Solution Space ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Analyse&DiscoverArchitect& Implement High-Level Design Decisions Low-Level Design Decisions Decompose& Map

53. Analyse&Discover ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Distilling the problem domain & discovering the core subdomain DDD & Wardley Maps Core Subdomain Problem Domain STRATEGIC DESIGN (PROBLEM SPACE) Supporting Subdomain Generic Subdomain @suksr ProblemSpace StrategicDesign

54. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Distilling the problem domain & discovering the core subdomain DDD & Wardley Maps Core Subdomain Problem Domain Competitive advantage Complex Changes often Build in-house STRATEGIC DESIGN (PROBLEM SPACE) Supporting Subdomain Generic Subdomain @suksr Analyse&Discover ProblemSpace StrategicDesign Build in-house Use/buy off-the-shelf product Outsource to utility suppliers

55. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Distilling the problem domain & discovering the core subdomain DDD & Wardley Maps Core Subdomain Problem Domain Competitive advantage Complex Changes often Build in-house No competitive advantage Quite simple Does not change often Prefer to buy/use off-the-shelf STRATEGIC DESIGN (PROBLEM SPACE) Supporting Subdomain Generic Subdomain @suksr Analyse&Discover ProblemSpace StrategicDesign Build in-house Use/buy off-the-shelf product Outsource to utility suppliers

56. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Distilling the problem domain & discovering the core subdomain DDD & Wardley Maps Core Subdomain Problem Domain Competitive advantage Complex Changes often Build in-house No competitive advantage Quite simple Does not change often Prefer to buy/use off-the-shelf No competitive advantage Generally complex Does not change often Buy/use off-the-shelf / outsource STRATEGIC DESIGN (PROBLEM SPACE) Supporting Subdomain Generic Subdomain @suksr Analyse&Discover ProblemSpace StrategicDesign Build in-house Use/buy off-the-shelf product Outsource to utility suppliers

57. Decompose& Map Analyse&Discover ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Model Driven Design DDD & Wardley Maps STRATEGIC DESIGN (SOLUTION SPACE) Development Teams Domain Experts Ubiquitous Language Analysis Model Code Model Domain Model Core Subdomain Supporting Subdomain Generic Subdomain Problem Domain abstracted by @suksr ProblemSpaceSolutionSpace StrategicDesign

58. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Bounded Contexts DDD & Wardley Maps STRATEGIC DESIGN (SOLUTION SPACE) Core Subdomain Supporting Subdomain Generic Subdomain Problem Domain Linguistic/semantic boundary Ownership boundary Model integrity boundary Physical boundary Different architectural patterns per context possible @suksr Microservice candidates Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

59. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Know your users & focus on user needs Submit Session DDD & Wardley Maps STRATEGIC DESIGN (PROBLEM SPACE) Speaker @suksr Analyse&Discover ProblemSpace StrategicDesign

60. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps STRATEGIC DESIGN (PROBLEM SPACE) Discovering subdomains Supporting GenericCore @suksr Analyse&Discover ProblemSpace StrategicDesign

61. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps STRATEGIC DESIGN (SOLUTION SPACE) Supporting GenericCore Event Evaluation AccountSchedule MessageSession Domain Models @suksr Decompose& Map Analyse&Discover ProblemSpaceSolutionSpace StrategicDesign

62. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore Event Evaluation AccountSchedule Message Speaker Session CfP STRATEGIC DESIGN (SOLUTION SPACE) Domain Models @suksr Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

63. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore Event Evaluation AccountSchedule Message Speaker Profile Submitted Session CfP Settings Recipient Open CfP Evaluated Session Scheduled Session STRATEGIC DESIGN (SOLUTION SPACE) Domain Models @suksr Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

64. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore STRATEGIC DESIGN (SOLUTION SPACE) Bounded Contexts Linguistic/semantic boundary Model integrity boundary Event Evaluation AccountSchedule MessageSubmitted Session CfP Settings Recipient Open CfP Evaluated Session Scheduled Session Speaker Profile Session Evaluation Submission Handling Event Mngmnt. Schedule Mngmnt. Messaging Account Handling @suksr Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

65. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore STRATEGIC DESIGN (SOLUTION SPACE) Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. Bounded Contexts Ownership boundary Linguistic/semantic boundary Model integrity boundary @suksr Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

66. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore STRATEGIC DESIGN (SOLUTION SPACE) Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. Bounded Contexts Ownership boundary Linguistic/semantic boundary Model integrity boundary Physical boundary SCM Data store CI/CD Artefact @suksr Decompose& Map Analyse&Discover ProblemSpace StrategicDesign SolutionSpace

67. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore TACTICAL DESIGN Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. Architectural Patterns Architectural patterns can differ per Bounded Context, e.g. Layered Architecture Hexagonal Architecture CQRS @suksr Decompose& Map Analyse&Discover ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement

68. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore TACTICAL DESIGN Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. Business Logic Implementation Patterns Business logic implementation patterns can differ per Bounded Context, e.g. Domain Model Active Record Transaction Script @suksr Decompose& Map Analyse&Discover ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement

69. Example BC: EVENT MANAGEMENT Event create: Event activate reschedule rename EventId id: string Name create: Name name: string EventStatus CREATED ACTIVATED DEACTIVATED deactivate Description create: Description desc: string Period create: Period start: Date end: Date Value Object Entity Aggregate Root Aggregate @suksr EventController MongoDBEventRepository EventModel EventApplicationService EventRepository POST /events/{id}/activatePOST /events DELETE /events/{id} Inner Outer Outside (Port) (Adapter) (Adapter) (Port)

70. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore TACTICAL DESIGN Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. DDD suits best for the core subdomain Movement Build in-house Use/buy off-the-shelf product Outsource to utility suppliers - or - - or - @suksr - or - Decompose& Map Analyse&Discover ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement

71. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Wardley Maps Supporting GenericCore INFRASTRUCTURE MAPPING @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Understand the involved components and their dependencies (position) Position Data Storage Infrastructure

72. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Understand the involved components and their dependencies (position) Data StorageSearch Engine Wardley Maps INFRASTRUCTURE MAPPING Position Infrastructure

73. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Understand the involved components and their dependencies (position) Data StorageSearch Engine Compute Platform Wardley Maps INFRASTRUCTURE MAPPING Position Infrastructure

74. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Understand the involved components and their dependencies (position) Data StorageSearch Engine Compute Platform VM Wardley Maps INFRASTRUCTURE MAPPING Position Infrastructure

75. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Data Storage Search Engine Compute Platform VMMovement Plot components along evolution axes (movement) and use appropriate method per evolution stage Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Infrastructure

76. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Data Storage Search Engine Compute Platform VM Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Infrastructure & operational complexities Wardley Maps INFRASTRUCTURE MAPPING Infrastructure

77. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Data related components & activities Compute Platform Data Storage Search Engine VM Wardley Maps INFRASTRUCTURE MAPPING Infrastructure

78. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit DDD & Wardley Maps Supporting GenericCore TACTICAL DESIGN @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Search Engine Compute Platform Data Storage VM Service related components & activities Infrastructure

79. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Submission Handling Event Mngmnt. Session Evaluation Schedule Mngmnt. Messaging Account Handling Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Search Engine Compute Platform Data Storage VM Service interaction related components & activities Wardley Maps INFRASTRUCTURE MAPPING Infrastructure

80. command query Request-Driven @suksr API API Service Interactions

81. command query Request-Driven Message Broker publish subscribe Event-Driven @suksr API API Service Interactions

82. command query Message Broker publish subscribe command query Request-Driven Hybrid Message Broker publish subscribe Event-Driven @suksr API API API Service Interactions

83. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Search Engine Compute Platform Data Storage VM Request-driven related components & activities Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. Infrastructure

84. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Compute Platform VM Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. Event-driven & hybrid related components & activities Message Broker Search Engine Data Storage Infrastructure

85. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Compute Platform VM Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. Message Broker Search Engine Data Storage Discuss & plan Infrastructure

86. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Compute Platform VM Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. Message Broker Search Engine Data Storage Discuss & plan Open Source Software Infrastructure

87. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS Example Message Broker Search Engine Data Storage Compute Platform VM Open Source Software Infrastructure

88. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS Message Broker Search Engine Data Storage Compute Platform VM Discuss & plan Offload to cloud hosted services Infrastructure

89. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS Compute Platform VM DB aaS SE aaS MB aaS Offload to cloud hosted services ID aaS Infrastructure

90. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS Compute Platform VM DB aaS SE aaS MB aaS Discuss & plan Offload to container orchestration platform ID aaS Infrastructure

91. Managed by YOU Managed by PlatformHardware O/S Virtualization Container Runtime O/S Orchestration µService Container Runtime µService Service Discovery Load Balancer Config-Mngmt. Monitoring Log Aggreation Health Checks Recovery Scaling @suksr Container Orchestration API Gateway

92. Containerized Microservice Pod Service Volume Deployment Master Node Worker NodeWorker Node Ingress Deployment Deployment Container Orchestration BASIC COMPONENTS OF KUBERNETES

93. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS VM DB aaS MB aaS Worker Nodes Master Node SE aaS Container Orchestration w/ Kubernetes Compute Platform ID aaS

94. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS VM DB aaS MB aaS Worker Nodes Master Node SE aaS Container Orchestration w/ Kubernetes Compute Platform Pod Deploym. Volume IngressService New Primitives ID aaS

95. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS VM DB aaS MB aaS Worker Nodes Master Node SE aaS Container Orchestration w/ Kubernetes Compute Platform Pod Deploym. Volume IngressServiceSecretStateful Set Cron Job JobConfig Map Network Policy Replica Set Daemon Set Horizontal Pod Autoscaler Persistent Volume ClaimEgress more ... ID aaS Infrastructure

96. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. OSS VM DB aaS MB aaS Worker Nodes Master Node SE aaS Compute Platform Container Orchestration Discuss & plan Offload application networking concerns to a service mesh ID aaS Infrastructure

97. Circuit Breaker Timeout Retries Kubernetes / Service Mesh Sidecar Proxy Application Networking Concerns @suksr Metrics Security Sidecar Proxy Distributed Tracing Log Aggregation Separation Of Concerns SERVICE MESH

98. Proxy Proxy Microservice Microservice Policy & Telemetry (Mixer) Discovery & Config to Proxies (Pilot) Config (Galley) TLS Certs to Proxies (Citadel) Data Plane Control Plane HTTP, gRPC, TCP mTLS Service Mesh COMPONENTS OF ISTIO

99. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. VM DB aaS MB aaS Worker Nodes Master Node SE aaS Container Orchestration ID aaS Destination Rule Gateway Service Entry Policy ServiceRole / -Binding ClusterRbac Config Virtual Service Service Mesh Infrastructure

100. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution EvaluateManage Organiser Build & Publish Communicate Signup/Signin Speaker Submit Supporting GenericCore @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalD. ScheduleSession Event Submission w/ Speakers Build in-house Use/buy off-the-shelf product Outsource to utility suppliers Wardley Maps INFRASTRUCTURE MAPPING Submission H. Event M. Session Eval. Schedule M. Messaging Account H. VM DB aaS MB aaS Worker Nodes Master Node SE aaS Container Orchestration ID aaS Service Mesh Discuss & plan Move to Serverless Infrastructure

101. FunctionEvent Event-Driven Workflow Hardware Data Store O/SVirtualization Container Runtime Fully Managed By Third Party Ephemeral Function Pay-per-ExecutionAuto-Scaling @suksr triggers Serverless w/ FaaS CHARACTERISTICS

102. Lambda API Gateway SNS SQS DynamoDB Step Functions Core AWS Serverless Building Blocks S3 Kinesis CloudWatch Cognito @suksr IAM and more Serverless AWS BUILDING BLOCKS

103. ApiGatewayAdapter DynamoDBAdapter EventModel EventApplicationService EventRepository DynamoDB newEvent API Gateway Manage EventOrganiser Event Management

104. ApiGatewayAdapter DynamoDBAdapter EventModel EventApplicationService EventRepository EventPublisherSNSTopicAdapter DynamoDB SNS newEvent activateEvent API Gateway Manage EventOrganiser Event Management

105. ApiGatewayAdapter DynamoDBAdapter EventModel EventApplicationService EventRepository EventPublisherSNSTopicAdapter DynamoDB SNS newEvent activateEvent API Gateway Manage Event DynamoDBAdapter SessionModel SessionApplicationService SessionRepository DynamoDBSNSTopicAdapter eventActivated Organiser Event Management Session Handling

106. ApiGatewayAdapter DynamoDBAdapter EventModel EventApplicationService EventRepository EventPublisherSNSTopicAdapter DynamoDB SNS newEvent activateEvent API Gateway Manage Event ApiGatewayAdapter DynamoDBAdapter SessionModel SessionApplicationService SessionRepository DynamoDB submitSession API Gateway Submit Session SNSTopicAdapter eventActivated S3Adapter S3 pictureUploaded Organiser Speaker Event Management Session Handling

107. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Evaluate Submissions Manage Event Organiser Build & Publish Schedule Communicate w/ Speakers Signup/Signin Speaker Submit Session DDD & Wardley Maps Supporting GenericCore TACTICAL DESIGN Submission Handling Event Mngmnt. Session Evaluation Messaging Account Handling Schedule Mngmnt. Build in-house Use/buy off-the-shelf product Outsource to utility suppliers @suksr ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Serverless w/ FaaS API Gateway Lambda DynamoDB S3 SNS Cognito SE aaS Infrastructure

108. Serverless Infrastructure Providers

109. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Summary @suksr Know your users & user needs

110. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Summary Supporting GenericCore @suksr Decompose &Map Analyse&Discov. ProblemSpaceSolutionSp. StrategicDesign Know your users & user needs Understand the problem first and focus on core domain

111. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Summary Supporting GenericCore @suksr Decompose &Map Analyse&Discov. ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement - or - - or - - or - Know your users & user needs Understand the problem first and focus on core domain DDD suits well for your core domain

112. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Summary Supporting GenericCore @suksr Decompose &Map Analyse&Discov. ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement Infrastructure Know your users & user needs Understand the problem first and focus on core domain DDD suits well for your core domain Identify and outsource commodities

113. ValueChain InvisibleVisible Genesis Custom-Built Product (+rental) Commodity (+utility) Evolution Summary Supporting GenericCore @suksr Decompose &Map Analyse&Discov. ProblemSpaceSolutionSpace StrategicDesignTacticalDesign Architect& Implement Infrastructure Know your users & user needs Understand the problem first and focus on core domain DDD suits well for your core domain Identify and outsource commodities Efficiency enables innovation

114. Some References https://learnwardleymapping.com/ https://medium.com/wardleymaps https://miro.com/blog/wardley-maps-whiteboard-canvas/ https://community.wardleymaps.com/

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