Patterns are the universal language of architects to communicate, refer, implement and improve. Architecture patterns from traditional SOA (service-oriented architecture) to ROA (resource-oriented architecture) and today to MSA (microservice architecture) drive most enterprise architectures today. Subpatterns such as EDA (event driven architecture) and WOA (web oriented architecture) also has a lot of traction today. These high-level concepts provide many best practices for enterprise architects that are looking to evolve their existing enterprise architecture or for those creating newer enterprise architecture strategies. However, where should do we draw the line? Is SOA still the way to go or should we focus on MSA? During this session, Asanka will critically analyze the good, the bad and the ugly (if any) of the various architecture patterns, and jointly figure out where they should fit in.

1. Pattern Driven Enterprise
Architecture
Asanka Abeysinghe
Vice President, Solutions Architecture
WSO2, Inc.

2. ”Pattern" is a generic solution for a
common recurring problem.

3. Picture credit : http://flicker .com

5. Enterprise Architecture “Manage the
complexity of the IT environment and
applies principles and techniques to
reduce the complexity, improve
efficiencies, and reduce capital and
operational expenditure.”

6. ZachmanFramework

7. Enterprise architecture has changed today
- Less visibility to projects
- Difficult to find
- Availability
- Ownership
- (as a result EA provides *-platforms)
- Change management
- Development cycles:
- From 18 to 6 months to 3 months

8. Enterprise architecture has changed today
- Real standards
- Technical (REST, SOAP, protobuf)
- Business (ACORD, HL7, FIX, FAST)
- Integration/APIs is key (extend to connected business)
- Companies without integration are falling behind
- Heterogeneous systems

9. Evolution of architecture patterns
- Object oriented : OOP
- Component based : COM/DCOM/CORBA
- Open distributed processing : ODP
- Enterprise application integration : EAI
- Service oriented : SOA
- Event driven : EDA
- Resource oriented : ROA
- Web oriented : WOA
- Microservice : MSA

10. SOA : “Architecture paradigm to build
highly loosely coupled distributed
systems”

11. SOA : “Nothing NEW, architecture style
to fix broken architectures”

12. SOA at kindergarten

13. SOA

14. SystemofSystems
LayeredEnterprise
Architecture

16. Event-driven
Architecture
Picture credit : http://nfl .com

17. Event-Driven Architecture

18. Event-Driven Architecture

19. Resource-Oriented
Architecture
Picture credit : http://flicker .com

20. Resource-Oriented
Architecture

21. Resource-Oriented Architecture

22. Web-Oriented
Architecture
Picture credit : http://flicker .com

23. Web-Oriented Architecture

24. Connectingthepatterns.
SOA

25. Microservice
Architecture
Picture credit : http://flicker .com

26. Picture credit : http://pwc.com

27. Picture credit : http://pwc.com

28. Microservice architecture (MSA) is a
pattern for building and delivering
service-oriented applications with two
primary objectives: agility of delivery
and flexibility of deployment.
Source : http://gartnercom

29. MSA is not based on all-new architectural
principles; it combines SOA best practices
with modern application delivery tooling
and organizational disciplines.
Source : http://gartnercom

30. "Micro" is a concept of scope rather
than size.

31. A microservice must have a single
purpose and be loosely coupled in
design and deployed independently of
other microservices.
Source : http://gartnercom

32. MSA : reference architecture
Picture credit : http://gartnercom

33. MSA : reference architecture

34. Requirements
Current
applications/systems
Δ Delta
Business architecture : business patterns

35. Business architecture patterns
- Maturity of process systems (MOPS)
- Platform enabled agile solutions (PEAS)
- Submission interface (SI)
- Make your logic explicit (MILO)
- ….........

36. Architecture approach
Business
Architecture
Solution
Architecture
• Level 0
• Level 1
Application
Architecture
• Integration
• Datamodels
• APIs
Runtime
Architecture
• Capacity Planning
• Deployment
• Security
Businessarchitecture
patterns
Solutionarchitecture
patterns
Applicationarchitecture
patterns
Deploymentarchitecture
patterns

37. Create your own patterns and build a
catalog.

38. Service firewall pattern

39. Used it before
Error proof
Architect’s
language
Catalog
PATTERNS

40. Thank You!
@asankama
http://asanka.abeysinghe.org
asankaa AT WSO2.com