Serverless journey on Azure, understanding the value of the abstraction of the infrastructure, scale without configuration, and how we should be prepared for it.

1. Ebru Cucen

2. @ebrucucen 2
Agenda
01
02
03
04

3. @ebrucucen
3
● Serverless provides the highest level of abstraction to
enable focus on business value
● As we shift away from non-differentiating infrastructure,
old and new challenges at application level still need to be
tackled
● Azure is on the market offering some interesting features
in the serverless space in comparison to AWS

4. @ebrucucen 4

6. @ebrucucen 6
Simon Wardley
“
unprecedented visibility and accuracy
”

7. @ebrucucen 7
https://martinfowler.com/articles/serverless.html
01
Abstraction of
infrastructure
management
02
Pay-as-you-go
03
Auto-scale

8. @ebrucucen 8
Data Center
Networking
Storage
Servers
Virtualisation
Runtime
Containers
Applications
Enterprise IT
Functions
Data Center
Networking
Storage
Servers
Virtualisation
Runtime
Containers
Applications
IaaS
Functions
Data Center
Networking
Storage
Servers
Virtualisation
Runtime
Containers
Applications
CaaS
Functions
Data Center
Networking
Storage
Servers
Virtualisation
Runtime
Containers
Applications
PaaS
Functions
Data Center
Networking
Storage
Servers
Virtualisation
Runtime
Containers
Applications
Serverless
Functions
Customer Vendor

9. 9

10. @ebrucucen 10

11. @ebrucucen 11

12. @ebrucucen
1 concurrent exec for 1GB
Resource Consumption:
● 2.2m GBs/month
● £950.4
Execution:
● 1.6m GBs
● £8.64/month
12
£959
https://www.slideshare.net/TimWagner/serverlessconf-2018-keynote-debunking-serverless-myths
Standard_B2s:
(2CPU/4GBRAM)
£313/annual Linux VM
£939

13. @ebrucucen 13
●
●
●
●

14. @ebrucucen
1 concurrent exec for 1GB
Resource Consumption:
● 2.2m GBs/month
● £950.4
Execution:
● 1.6m GBs
● £8.64/month
VM: £626 (2 Standard_B2s)
LB: £240/year
£866x3 =
WINNER
14
£959 £2.598

16. https://asciinema.org/a/bOH5uknb92QTLqHSDFtDxjMee

18. Migration Patterns -> Strangler, Abstraction by Branch
18
Language Trade Offs -> Runtime, TriggersA
B
Debugging -> Logging, Monitoring, TracingC
Caching, Versioning -> API ManagerD

19. ● NET Core (Linux/Windows)
● Node.JS (Linux/Windows)
● Java (Windows)
● Powershell Core (Windows)
● Python (Linux)
19

20. @ebrucucen
Input:
● Http
● Timer
● Azure Storage
● Azure Cosmos DB
● Azure Service Bus
● Azure Event Grid
● Azure Event Hub
● Azure IoT Hub
20
Output:
● Http
● Azure Storage
● Excel
● Azure Service Bus
● Azure Event Hub
● SendGrid
● Twilio
● Outlook Mail

21. Migration Patterns -> Strangler, Abstraction by Branch
21
Language Trade Offs -> Runtime, TriggersA
B
Debugging -> Logging, Monitoring, TracingC
Caching, Versioning -> API ManagerD

22. @ebrucucen
Postcode Lookup Service Migration
22
Verify
Phone
Register
Customer
Postcode
Lookup

23. @ebrucucen
Postcode Lookup Service Migration
23
Verify
Phone
Register
Customer
Postcode
Lookup
How to
decouple/
migrate?

24. @ebrucucen 24
1. Identify
Existing Call
Postcode
Lookup API

25. @ebrucucen 25
1. Identify
Existing Call
Postcode
Lookup API
2. Move
Existing Call
Postcode
Lookup API
Refactor
Before / after?
New
language
?

26. @ebrucucen
1. Identify
Existing Call
Postcode
Lookup API
2. Move
Existing Call
Postcode
Lookup API
Redirected Call
Lookup
Function
3. Redirect
Postcode
Lookup API
26
Refactor
Before / after?
New
language
?
Leave/
Remove
?

27. @ebrucucen
Postcode Lookup Service Migration
27
Verify
Phone
Register
Customer
Postcode
Lookup
Postcode
Lookup

28. @ebrucucen 28
User
Registration
Abstraction
User
Registration
Implements

29. @ebrucucen 29
User
Registration
Abstraction
User
Registration
Phone
Verification
Postcode
Lookup
Implements

30. @ebrucucen 30
User
Registration
Abstraction
User
Registration
Phone
Verification
Postcode
Lookup
Implements

31. @ebrucucen 31
User
Registration
Abstraction
User
Registration
Implements
Phone
Verification
Postcode
Lookup

32. @ebrucucen
User
Registration
Abstraction
User
Registration
Phone
Verification
Postcode
Lookup
Implements
32
User
Registration
Abstraction
User
Registration
Implements
Phone
Verification
Postcode
Lookup
User
Registration
Abstraction
User
Registration
Phone
Verification
Postcode
Lookup
Implements

33. @ebrucucen 33
Postcode
Lookup
User
Registration
User Registration
Abstraction
New User
Registration
Service
Phone
Verification
Postcode
Lookup
Implements
So do I need to think about autoscaling of overall system?

34. Address
Lookup
Address
Verification
Register
User
34
Chaining

35. @ebrucucen 35
Onboard User Register
User
State Machine
Email
Verification
Phone
Verification
Address
Lookup

36. @ebrucucen 36
Email
Verification
Phone
Verification
Address
Verification
Orchestrator Activity FunctionsOrchestrator ClientWebApp

37. Migration Patterns -> Strangler, Abstraction by Branch
37
Language Trade Offs -> Runtime, TriggersA
B
Debugging -> Logging, Monitoring, TracingC
Caching, Versioning -> API ManagerD

38. @ebrucucen 38

39. @ebrucucen 39

40. @ebrucucen 40

41. @ebrucucen 41
Language Options -> Runtime, Triggers
Migration Patterns -> Strangler, Abstraction by Branch, Chaining, State Machine/Durable Functions
Debugging -> Logging, Monitoring, Tracing
Caching, Versioning -> API Manager
A
B
C
D

42. @ebrucucen
● Debugging locally
● Portal Kudo
● Bash/shell into
● Process Explorer
● Live metrics
42

43. @ebrucucen 43

44. @ebrucucen 44

45. @ebrucucen 45

46. @ebrucucen 46

47. @ebrucucen 47

48. 48

49. 49

50. Language Trade Offs -> Runtime, Triggers
50
Migration Patterns -> Strangler, Abstraction by BranchA
B
Debugging -> Logging, Monitoring, TracingC
Caching, Versioning -> API ManagerD

51. 51

52. 52

53. 53

55. ● Standards/Policies
● Cloud Security Posture
● Input sanitisation
● Token validation for each function
55

56. Secure Http Endpoint:
● Use API Management for auth
● Use Authorization Keys Func Level
● Integrate into Identity
● Consider Rate throttling
● Enable Cost Alerts
56

58. 58

59. 59

60. 60

61. 61

62. ● Castle and moat approach*
● Point-to-Point to integrations/Route Table
● Communicate to back to on-prem?
● Life before and after Private Links
62
https://www-microsoft-com.cdn.ampproject.org/c/s/www.microsoft.com/en-us/microsoft-365/blog/2019/09/18/why-banks-adopt-modern-cybersecurity-zero-
trust-model/amp/

63. @ebrucucen
63
● Serverless provides the highest level of abstraction to
enable focus on business value
● As we shift away from non-differentiating infrastructure,
old and new challenges at application level still need to be
tackled
● Azure is on the market offering some interesting features
in the serverless space in comparison to AWS

64. 64

65. @ebrucucen
Serverless
https://martinfowler.com/articles/serverless.html
Serverless Myths:
https://www.slideshare.net/TimWagner/serverlessconf-2018-keynote-debunking-serverless-myths
Burning Monk Links:
http://blog.binaris.com/your-guide-to-migrating-existing-microservices-to-serverless/
https://blog.binaris.com/how-to-go-all-in-with-serverless-adoption/
(All)
https://medium.com/theburningmonk-com/all-my-posts-on-serverless-aws-lambda-43c17a147f91
65

66. @ebrucucen 66

67. Atlanta
contino.io continohq contino
London New York Melbourne Sydney

68. Atlanta
contino.io continohq contino
London New York Melbourne Sydney