Java is an open language. Every developer or organization can contribute to its open source components (libraries & frameworks) and even to the language specifications itself. This way, the community helps to improve the language continuously. While this gives developers a lot of freedom, it makes it hard to standardize. The software architecture of a Java application starts with its runtime (that is the combination of frameworks, specifications and application server). For years, monolitic JEE applications were hosted on heavy application servers. But is this platform the best option for fast, flexible and controlled delivery of business value embedded in cloud native-applications running on both IAAS-platforms and CAAS-containers? In this session Java-champion Bert Ertman will give his view.

1. Are We Really Cloud-Native?
Bert Ertman

2. System.out.println(“Hello World!”);

3. What is Cloud-Native?
answer: ‘Blah blah blah … Kubernetes!’

4. ‘Kubernetes is the Greek
god of spending money
on cloud services’
- @QuinniPig

5. About me:
• Java/Cloud Postmodernist
• Java Champion, JavaOne Rockstar Speaker,
and a Duke’s Choice Award Winner
• Book author for O’Reilly, speaker at many
conferences
Bert Ertman
Fellow, VP Technology
@BertErtman
/bertertman

6. About Cloud Computing

7. “The market for cloud services is growing
faster than virtually every other IT market
today, with much of this growth coming at the
expense of the traditional, non-cloud
offerings”
source: Gartner
Cloud is on the Rise…

8. TL;DR
Java EE is dead, long live Cloud!

9. Enterprise Cloud Adoption

10. What is Cloud Computing?

12. ‘It’s like
computers on
the internet,
right?’

15. ‘What is this
Serverless
witchcraft that
you speak of?’

16. The Evolution of Compute
Physical
Virtualization
Cloud Compute
Containers Serverless

17. =

19. Serverless removes the ‘R’ from COMPUTER

20. ‘Whoaa…
Serverless is
like cows on
the Internet?!!’

22. Middleware as managed services?
• Database
• Messaging
• API Gateway
• Storage
• Web Server
• …

24. SaaS
IaaS
PaaS
Serverless
Cloud-Native
The Cloud Spectrum

25. What is happening in the world?

26. ‘Software is eating
the world’
Marc Andreessen

27. We want to move fast,
and yet not break things

28. Our answer so far…
• Business agility = Microservices
• Infrastructure = CI/CD + containers
• Process = Agile + DevOps

29. …and this resulted in…

32. 80-90% of IT budgets are
spent on maintaining
existing systems
Got change
for my
innovative
ideas?

33. Is it really different?
App Server
virtual machine
App
inverted App Server
a.k.a. fat jar
a.k.a. Spring Boot
virtual machine
App

34. Is it different now?
inverted App Server
a.k.a. fat jar
a.k.a. Spring Boot
virtual machine
App
container

35. And now?
container
virtual machine
container
virtual machine
container
virtual machine
container
virtual machine
container
virtual machine

36. Modularization
• Breaking up bigger things into smaller, more
manageable, parts
• Cohesion over coupling
• Modularity is the ultimate agile tool!

37. Trade-offs of decomposition
• How to test?
• How to deal with configuration
• How to deal with dependencies?
• How to deal with versioning?
• How to deal with latency and overhead
• How to deal with monitoring?
• How to deal with …

39. Now maybe?
container
virtual machine virtual machine virtual machine
container orchestration platform
container container container
virtual machine virtual machine
container container container

40. DevOps

41. DevOps In
Name Only

42. Most traditional organizations…
• Standardized technical infra components
• Standardized hypervisor
• Standardized operating system(s)
• Standardized middleware
• Standardized application development framework
• Standardized programming language

43. Application Development
Standardized Infrastructure

44. What is an application?

45. 2009 answer…
“A bunch of code I have to build & test together into a
monolithic blob, which I then toss over the wall to an ops
team, who hopefully get it to run on a fleet of servers.
Then, I hope some work comes its way so I don’t waste
too much $...”

46. 2019 answer…
“Managed services in the public cloud,
connected and customized with highly
differentiated business logic, that run
(and bill) only when actually needed.”
La
S

47. Application
Infrastructure

48. Cloud-Native is a DevOps journey!
• Cloud-Native is the architecture for assembling
cloud-based components in a way that is optimized
for the cloud environment
• It’s not about the servers, but the services
• It’s about modernizing infrastructure and process,
and transforming the organizational culture along
the way

50. PaaS
IaaS
Serverless

51. This is more like it!
Lambda
S3

52. Technologies or
frameworks are not
cloud-native, it is the
way you use them

53. Getting the best from the Cloud
• Potential for economic disruption
• Ability to easily experiment with new technology or new business
ideas
• Focus on strategic value vs managing infrastructure and
middleware

54. Friends don’t let friends
build their own
Kubernetes platform

55. Kubernetes
Getting the best from the Cloud?
vs.
Managed Service

57. Is Java a natural fit?

58. Are Java programmers a
natural fit?

59. But what does it take to become a
Cloud Engineer?
So you can do Java* programming?

63. AWS Release Pace
• 2013: 280 new features
• 2014: 516 new features
• 2015: 722 new features
• 2016: ~1000 new features
• 2017: 1430 new features
• 2018: ~2000 new features

65. Now let’s talk about culture…

66. Cloud-Native Culture Killers
• Business does not trust IT, so no true BizDevSecOps
• IT is a cost center
• We only do cloud because it saves us money
(we think)

67. Cloud-Native Culture FTW!
• We have an IT-first strategy
• We see Cloud as a potential for economic disruption
• Cloud enables us to start experiments (forward
thinking) and is our ability to innovate
• Cloud enables a faster time-to-market
• All our engineers are broadly skilled, and teams are
fully mandated

68. Thank you!
Any questions?
@BertErtman
/bertertman