Slides from my talk at the "Proces Automation Forum" organized by Camunda in different cities over Europe in February 2020

1. Digitalisierung,
Cloud-Ära,
Workflow Automatisierung
#PickYourBuzzword
@berndruecker

2. Software is
eating the
world.
Marc Andreessen,
Entrepreneur &
Investor
2011 in „The Wall
Street Journal“
„
Photo by techcrunch, available under Creative Commons BY 2.0 license.

3. “We are a Tech
Company”
Goldman Sachs CEO
Lloyd Blankfein
3
https://www.bloomberg.com/view/articles/2018-02-15/lloyd-blankfein-wants-goldman-sachs-to-push-technology

4. 4
Today, every company is becoming a software
company and developers are at the center of
digital transformation; they drive business
processes and functions across organizations
from customer service and HR to marketing and
IT. And the choices these developers make will
increasingly determine value creation and
growth across every industry.
https://news.microsoft.com/2018/06/04/microsoft-to-acquire-github-for-7-5-billion/

5. 5
https://blogs.thomsonreuters.com/answerson/all-companies-are-technology-companies-now/

6. World Insurance Report 2018
Capgemini
6
https://www.capgemini.com/de-de/news/world-insurance-report-2018-deutsche-versicherer-bei-automatisierungstechnologien-ueber-dem-weltweiten-
durchschnitt/

7. Change is the only constant
„ We don‘t know what we will need tomorrow.
But we do know that we will need something.
We have to be able to move quickly!
CIO of a German insurance company in 2019

8. And you?

9. Wild West Integration

10. Credit Card
Handling
Payment
RESTOrder
Fulfillment
REST
DBPaymentId Amount Status
1 100 $ Collected
2 125 $ Open
Reporting of
overdue payments
{script}
Fixing open
payments
Scheduler to
process open
payments
Damn it – we
need a date!
…to be continued…

11. Batch
Processing

12. Batch
Processing

13. Adjust credit
limit
Verifiy request
Batch
Workflow
e.g.
1 am
Batches are orthogonal
to the real workflow
Items flow along the
workflow as they come in
e.g.
11 pm

14. “People were saying that
groups needed to communicate
more.
Jeff got up and said, ‘No,
communication is terrible!’ ”
https://www.fastcompany.com/50106/inside-mind-jeff-bezos-5

15. Microservices…
Service
B
Some
Service
Some
Service Some
Service
Service
C
Service
A
Service
D
Monolith
Functionality
A
Functionality
B
Functionality
C
Functionality
D

16. Some
Service
Some
Service
Some
Service
Some
Service
Some
Service
Some
Service
Some
Service
Autonomous Microservices…

18. Simplified example:
dash button
Photo by 0xF2, available under Creative Commons BY-ND 2.0
license. https://www.flickr.com/photos/0xf2/29873149904/
@berndruecker

19. Three steps…
@berndruecker

20. (Micro-)services
Checkout
Payment
Inventory
Shipment
@berndruecker

21. Example
Checkout
Payment
Inventory
Shipment
The button blinks if we can
ship within 24 hours
@berndruecker

22. Request/response: temporal coupling
Checkout
Payment
Inventory
Shipment
Request
Response
The button blinks if we can
ship within 24 hours
@berndruecker

23. Temporal decoupling with events and read models
Checkout
Payment
Inventory
Shipment
Good
Stored
Read
Model
Good
Fetched
The button blinks if we can
ship within 24 hours
*Events are facts about what happened (in the past)
@berndruecker

24. Order
Placed
Payment
Received
Goods
Fetched
Notification
Checkout
Payment
Inventory
Shipment
Event-driven architecture
@berndruecker

25. Peer-to-peer event chains
Checkout
Payment
Inventory
Shipment
Order
placed
Payment
received
Goods
shipped
Goods
fetched
@berndruecker

26. Peer-to-peer event chains
Checkout
Payment
Inventory
Shipment
Order
placed
Payment
received
Goods
shipped
Goods
fetched
@berndruecker

27. Phil Calcado at QCon NYC 2019

28. API
API
API
API
API
API
API
Microservices
External Services
Standard Software
„What the hell just happened?“
@berndruecker

29. Process Events Monitoring
Camunda
Optimize
Order
placed
Payment
received
Goods
fetched
Goods
shipped
@berndruecker

31. Keep it stable…
…just move that one stick
down there to the top.
How hard
can it be?

32. Peer-to-peer event chains
Checkout
Payment
Inventory
Shipment
Order
placed
Payment
received
Goods
shipped
Goods
fetched
Fetch the goods
before the
payment
@berndruecker

33. Peer-to-peer event chains
Checkout
Payment
Inventory
Shipment
Fetch the goods
before the
payment
Goods
fetched
Order
placed
Payment
received
Goods
shipped
@berndruecker

34. What we wanted
Photo by Lijian Zhang, available under Creative Commons SA 2.0 License and P..19 / CC BY-SA 4.0
@berndruecker

35. Order
Extract the end-to-end responsibility
Checkout
Payment
Inventory
ShipmentPayment
received
Order
placed
Retrieve
payment
@berndruecker

36. Order
Checkout
Payment
Inventory
Shipment

37. Workflows live inside service boundaries
@berndruecker

38. No BPM(N) monoliths
https://blog.bernd-ruecker.com/avoiding-the-bpm-monolith-when-using-bounded-contexts-d86be6308d8
@berndruecker

39. Zalando does
Sales-Order & Order-Fulfillment
or every order worldwide
via Camunda
@berndruecker

40. Code, code, code…
@berndruecker

41. Microservices & Workflow Automation
http://berndruecker.io/

42. Thank you!
@berndruecker