Presentation about the DevOps movement at Scania. Conference: Continuous Lifecycle London 2016-05-03. http://continuouslifecycle.london/ By Anders Lundsgård (@anderslundsgard) and Mattias Järnhäll (@mattiasjarnhall)

1. The DevOps journey in an Enterprise
Anders Lundsgård
Dev
Mattias Järnhäll
Ops
May 3rd 2016

2. Who are we?
 Anders Lundsgård
• Developer & Technical Architect (Senior Engineer)
• Scania Connected Services, Delivery Engineering Team
 Mattias Järnhäll
• Manager
• Infrastructure Delivery .NET

3. What We will talk about
 Very short about Scania
 Our DevOps movement
 The ‘Ops’ in DevOps
 Final takeaways
3

4. What does Scania?
Annually ~80.000 heavyweight trucks

5. Software evolution at Scania
‘90s
Spaghetti Code
‘00s
Growing monoliths
‘10s
Microservices era

6. Disclaimer
The opinions expressed in this presentation
and on the following slides are solely those of
the presenters and not necessarily those of
Scania as a whole.

7. We at infra need to be an enabler for
developers. Enable automatic deployments
and roll-backs.
Creating tools/dashboards with relevant
KPI’s so that the developer can fast and
easily see the consequences of a deployment.
- Mattias Järnhäll, Infrastructure manager
2014.03.03 on Scania social network

8. in the early days…
DevOps movement
More features
quicker Stability

9. More features
quicker Stability

10. Shared understanding and common goals

11. Pipeline
Tests
Code
‘90s ‘00s ‘10s
Software Delivery Through the Decades

12. DevOps
Agile explained

13. Agile explained

14. CODE
IN PROD
PENDING
CODE
NEW
FEATURES
Customer
Value
Limit Work In Progress

15. Version Control
Pull & Push several
times a day
Continuous
Integration
Server Target Servers
(Dev, Staging, Prod)
Version Everything
- Code
- Tests
- Configuration
- Database
- Infrastructure
15 minutes
Automation – Deployment Pipeline
Deploy
Server

16. Reveal a Secret

17. Developers care about
QA and Stability
if…
they gets accountable

18. 18
Growing Microservices out of Monoliths
Why?
How?
Results?

19. GUI
Database
Infra
Business
Logic
Networking Storage
OS
Integration
Service
1
Service
2 Service
5
Service
7
Service
8
Service
10
Service
12
Service
14
Service
3
Service
4
Service
6
Service
9
Service
11
Service
15
Middleware
Service
13
User Interface
Security Monitoring
Even with Continuous Integration,
fast delivery is hard with 50+
engineers and a large codebase.
Monolith

20. All Infra
needs
User Interface
Service
1
Service
2 Service
5
Service
7
Service
8
Service
10
Service
12
Service
14
Service
3
Service
4
Service
6
Service
9
Service
11
Service
15
Service
13
All Infra
needs
All Infra
needs
All Infra
needs
All Infra
needs
All Infra
needs
All Infra
needs
All Infra
needs
GUI
Database
Infra
Business
Logic
Why Microservices?
1. Autonomous teams
2. Build, Test, Deploy SPEED
Microservices

21. Check-in frequency
Project: Scania Connected Services

22. Ops!

23. Who am I and why am I here?
 13 years @ Infrastructure
 Have an attraction to developers
 Passionate about the agile transformation
 Love big complex challenges

24. What I will talk about
 Setting the context – why is this hard?
 What did we look like before change? Pain points?
 The transformation starts – and where we are now.

25. 25
Enterprise IT challenges
#1 Different types of customer needs
? !
I have an app.
Can you install it
for me?
Can you help me
to help myself?

26. 26
Enterprise IT challenges
#2 The Legacy

27. 27
Enterprise IT challenges
#3 Optimized for resource efficiency

28. Back in the days...
Pain Points
 Required a lot of coordinating roles
 Lots of hand overs
 Unclear responsibilities
 Gap between solutions and infra/op
 Optimized for resource efficiency
 ”far away from our customer” (solutions)
 Unclear ownership of deliveries
OperationsInfrastructure
Network
Storage
HW / Virtualization
OS
DB
WEB
Solutions
Built Bought

29. Clearly pointed out that IT should be strategic and transformational
And that we need to become more agile in our way of working.
New MD, clear direction and new org

30. Infrastructure Services
Infra Solution
Team
.NET
Infra Solution
Team
.NET
Infra Solution
Team
Java/Oracle
Infra Solution
Team
Java/Oracle
Sales Service PD O2D Shared EUP
Self Service Portal
What happened… Delivery
Focus
Provide infrastructure services
that are easy to consume.
Autonomous delivery
departments with a clear
customer.
Enable delivery departments
to be agile
Infra Solution
Team
.NET

31. Our mission is to enable our customer
become more agile while keeping a
robust infrastructure solution with high
performance that is easy to maintain
over its lifecycle.
We do this by:
• Using standardized infrastructure components
• Automating operational tasks
• Sharing our knowledge to developers
• Providing infrastructure solutions that are easy to maintain

32. Transformation don’t happen over night…
 Still mostly reactive work
 Working on breaking old roles / habbits
 Understanding CI, CD, IaC
 Getting everybody onboard

33. “Don’t fight stupid, make more Awesome”

34. Use your technical skills
Poor little me.
I’m just a Dev.
What can I do?
Zero Downtime
Feature Toggles
Deploy is a part of
your daily job
Deploy is decoupled
from Release

35. Collaboration > Automation
Good reads
Automation Business impact
Pair Programming
Collocate with coffee machine

36. 36

37. 37

38. Thank You!
Anders Lundsgård: @anderslundsgard
Mattias Järnhäll: @mattiasjarnhall