In this talk, we look into an example of how to make previously simple things again simple. We introduce project Kyma: a side-by-side extension environment based on Kubernetes from the ground up, allowing developers to customize the functionality of enterprise systems, using business events and HTTP triggers. It makes use of Istio Service Mesh, benefits from Knative and relies on NATS for message routing. We've released it as open source project Kyma (https://kyma-project.io) We go briefly across the technology stack, looking at each of the components and exploring what factors lead to the choice of technology and what alternatives we've left out of the equation. We also look into how that fits into the broader Cloud-native ecosystem and what potential synergies we see with other CNCF projects.

1. PUBLIC
Krasimir Semerdzhiev / @evilyeti
SAP
Extending Business systems with
Kubernetes, Istio and Java.

2. PUBLIC
Krasimir Semerdzhiev / @evilyeti
SAP
Extending Business systems with
Kubernetes, Istio and ………………… .<fill in here your language of choice>

3. 3PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Krasimir Semerdzhiev (aka Krassi aka @evilyeti)
• Computer magazine
• Gamers’ workshop
magazine
• ProSyst GmbH
• InQMy Labs
SAP Labs Bulgaria
• SAP SE
• SAP Hybris -> SAP Customer Experience

4. 4PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
About me
About Extensibility
Real-world scenarios
Possible solution
Real-world showcase
Technology stack behind the scenes
How to get involved
Agenda

5. The extensibility journey

6. 6PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
“You can choose any color,
as long as it’s black…”
Standard software in automotive

7. 7PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Color is no longer a topic.
People tend to focus on leather seats and other goodies
Only Black and White colors are typically free though .
Standard software in modern automotive

8. 8PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Next level: digital twin
Every car is unique – it’s profile follows the car along the production line.
Hundreds of options to select from to personalize/customize YOUR dream car.
Personalization/customization of software in modern automotive
Image: https://www.inverse.com/article/41363-tesla-factory-robots-engineers

9. 9PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
To custom development…
Custom development/extensibility in modern automotive
Image: https://i.ytimg.com/vi/0eDfPyVtZIg/maxresdefault.jpg
https://s3.ics-assets.co.uk/resized/media/img/car360_image_images/870-732003/NhZnRkj5CN2EOijWWmI2.JPG
From standard software…

10. 10PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Is it specific to cars?
Of course not! 

11. 11PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Next-day delivery
Fully customizable
YOUR shoes!
Adidas “Speedfactory”

12. 12PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Let’s get a bit closer to
software…

13. 13PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
From Configuration through Customization to Extensibility
Ease of
adaptation
Flexibility &
Responsibility

14. Real world scenarios

15. 15PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Every customer
journey is unique
and every point of
engagement matters!
Support
portal
MAKE
PAYMENT
Contact
Center
JOIN
GROUPS
POST
REVIEW
Social
Web-Shop
E-mail
Contact
Center
RECEIVE
OFFER
Digital
ADS
DISCOVER
NEED
Print
Web
TV
CENTER
ADDRESS
Retail
store
Contact
Center
Branded
commu-
nity
NETWORK
ISSUE
Support
portal
SETUP
PHONE
RECEIVE
PACKAGE
MISSING
ITEM
TRACK
ORDER
BUY
Web-shop
Retail
store
RESEARCH
Reviews
REFER
FRIENDS
RECEIVE
OFFER
RESTART
SERVICE
Contact
Center
TERMINATE
SERVICE
PHONE
DAMAGE
Retail
store
Social
BILLING
ISSUE
Contact
Center
Web-shop
Word of
mouth
Social
E-mail
AWARENESS
DISCOVERY
CONSIDERATION
ACTION
USE
ADVOCACY
ACTION
CONSIDERATION
ADVOCACY
USE
Social
Word of
mouth
RESEARCH
INTEREST
Web-Shop
Search
KW/ADS
Web

16. 16PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Every customer
journey is unique
and every point of
engagement matters!
Support
portal
MAKE
PAYMENT
Contact
Center
JOIN
GROUPS
POST
REVIEW
Social
Web-Shop
E-mail
Contact
Center
RECEIVE
OFFER
Digital
ADS
DISCOVER
NEED
Print
Web
TV
CENTER
ADDRESS
Retail
store
Contact
Center
Branded
commu-
nity
NETWORK
ISSUE
Support
portal
SETUP
PHONE
RECEIVE
PACKAGE
MISSING
ITEM
TRACK
ORDER
BUY
Web-shop
Retail
store
RESEARCH
Reviews
REFER
FRIENDS
RECEIVE
OFFER
RESTART
SERVICE
Contact
Center
TERMINATE
SERVICE
PHONE
DAMAGE
Retail
store
Social
BILLING
ISSUE
Contact
Center
Web-shop
Word of
mouth
Social
E-mail
AWARENESS
DISCOVERY
CONSIDERATION
ACTION
USE
ADVOCACY
ACTION
CONSIDERATION
ADVOCACY
USE
Social
Word of
mouth
RESEARCH
INTEREST
Web-Shop
Search
KW/ADS
Web
We need a common extension
framework across the landscape.

17. 17PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
We introduced Kyma
Make simple things simple again!
Kyma equips developers with agile tools to customize, extend, and integrate
any API-enabled application and tailor it to their needs.
kyma-project.io

18. 18PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Getting Started with Kyma
Application connection
Application
API
Events
ApplicationConnectorApplicationConnector

19. 19PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Getting Started with Kyma
Application connection
Application
API
Events
ApplicationConnector
 Certificate & Credentials Exchange
ApplicationConnector

20. 20PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Getting Started with Kyma
Application connection
Application
API
Events
ApplicationConnector
 Certificate & Credentials Exchange
ApplicationConnector
 Events & API registration

21. 21PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Getting Started with Kyma
Application connection
Application
API
Events
ApplicationConnector
Events
 Events & API registration
 Certificate & Credentials Exchange
ApplicationConnector
λ
invokes
EventBus

22. 22PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
λ
Application
API
Events
ApplicationConnector
Events
Authenticated
API Calls
 Events & API registration
invokes
 Certificate & Credentials Exchange
ApplicationConnector
Getting Started with Kyma
Application connection
EventBus

23. 23PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
λ
Application
API
Events
ApplicationConnector
Events
Authenticated
API Calls
 Events & API registration
invokes
 Certificate & Credentials Exchange
ApplicationConnector
Getting Started with Kyma
API exposure
EventBus
API Exposure
Exposes API
endpoint

24. 24PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
λ
Application
API
Events
ApplicationConnector
Events
Authenticated
API Calls
 Events & API registration
invokes
 Certificate & Credentials Exchange
ApplicationConnector
Getting Started with Kyma
Service consumption
EventBus
API Exposure
Exposes API
endpoint
ServiceCatalog
Consumes
services

25. 25PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
λ
Application
API
Events
ApplicationConnector
Events
Authenticated
API Calls
 Events & API registration
invokes
 Certificate & Credentials Exchange
ApplicationConnector
Getting Started with Kyma
Available everywhere
EventBus
API Exposure
Exposes API
endpoint
ServiceCatalog
Consumes
services
On -
Premise
On -
Premise

26. 26PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Project Kyma: Side-by-side extensibility in-a-box
Apache 2.0 license, open source, kyma-project.io
Business Events
API calls
Open Service Broker
(OSB) compatible
service providers
Business services
ApplicationConnectivity
ServiceCatalog
Flows
Microservices
API Exposure
Functions
EventBus
Service
Management
Service
Consumption
Any Third Party System
Any Customer System
SAP ® C/4HANA
Any SAP ® System
API calls
On -
Premise
On -
Premise

27. Lets see it for real

28. 28PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Slack
Facebook
YouTube
Instagram
x
Extending WordPress with Kyma
Performing sentiment analysis on comments
Azure Cognitive
Services

29. 29PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Demo time!

30. 30PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Slack
Facebook
YouTube
Instagram
x
Extending WordPress with Kyma
Performing sentiment analysis on comments
Azure Cognitive
Services

31. Technology choices

32. 33PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Kubernetes: Foundation of portability

33. 34PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Kubernetes: The platform & the ecosystem
383Years of effort*
5,000+Contributors
49K+GitHub stars
- Sources: COCOMO Model, CNCF.io Certified Providers
Gardener

34. 35PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
KUBE-APISERVER
API
CLI
Kubernetes – basic architecture
Apache 2.0 licensed
ETCD
KUBE-SCHEDULER
CLOUD-CONTROLLER MANAGER
KUBE-CONTROLLER MANAGER
CLOUD PROVIDER
KUBERNETES MASTER
NODE
KUBE PROXY
KUBELET
POD
CONTAINER
NODE
POD
CONTAINER
NODE
POD
CONTAINER
CONTAINER REGISTRY
PLUGIN NETWORKOPERATOR/
DEVELOPER
KUBE PROXY
KUBELET
KUBE PROXY
KUBELET
USER
…

35. 36PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Storage volumes
Provide data to containers
Logging and monitoring
Track what’s happening with containers
Debugging and introspection
Enter or attach to containers
Identity and authorization
Control who can do things to containers
Scheduling
Decide where containers should run
Lifecycle and health
Keep containers running despite failures
Scaling
Make sets of containers bigger or smaller
Naming and discovery
Find where containers are now
Load balancing
Distribute traffic across a set of containers
Kubernetes handles for us…

36. 37PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Anybody else running Kubernetes at SAP?

37. 38PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Kubernetes Cluster Kubernetes Cluster A
Target IaaS Target IaaS/Account
Shoot Cluster A
Admins/Users/Customers
Worker
Microservices
SAP DataHub
SAP Commerce Platform
Heavy legacy system
Kubelet + Container Runtime
MasterMaster
Worker
Seed Cluster
Kubelet + Container Runtime
Control Plane A
Garden Cluster
Kubernetes Cluster
IaaS
SAP Central Management
Control Plane B
Control Plane C
Control Plane
...
Project Gardener – Kubernetes by inception
SAP HANA

38. 39PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Istio: Application Server -> Service Mesh

39. 40PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Container platform + polyglot service mesh
From app servers through micro-services to service mesh
App server
App App App App
Tracing
… 2005 … 2013 …
App
Logging Config
…Auth
Tracing
Logging
Config
…
Auth
App
Tracing
Logging
Config
…
Auth
App
Tracing
Logging
Config
…
Auth
App
Tracing
Logging
Config
…
Auth
App App App App
Infrastructure Infrastructure Infrastructure
Tracing Logging Config
…Auth
2018 …

40. 41PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Istio solves a set of very practical problems

41. 42PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Observability: Metrics and tracing
Insight into usage and load, request tracing
Chaos: Fault Injection
Inject latency or failure anywhere in the call
stack without mocking
Configuration management
Dedicated control plane
Discovery and Routing
Easy service consumption
Authentication and Service Identity
Trusted caller identification and mutual TLS
Policy enforcement
Flexibly define what can talk to what
Rate limiting
Protect services from overload
Resilience: Circuit breakers
Never hang forever waiting for response
#nonBlocking
Istio handles for us…

42. 43PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Knative: Serverless on your terms
on Kubernetes

43. 44PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
What is Knative

44. 45PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Event sources
Standardized event source abstraction with
on/off subscriptions
Event sources
Declarative binding between producers,
channels and deployed services
Scalable and pluggable eventing
Scales from few events to live stream pipelines
Knative will cover for us?
Activation and scaling
Request-based scaling 0-N
Code and revision management
Version management, including rollback
Traffic management
%-based traffic splitting
Access control
Standardized registration flow

45. 46PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Serverless > Function

46. 47PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Serverless > Compute
Function

47. 48PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
“Knative will almost certainly become
the standard plumbing for
Functions-as-a-Service on Kubernetes”
-- James Governor, @RedMonk

48. 49PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
“Developers are the new
kingmakers”
-- James Governor, @RedMonk

49. 50PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Enterprise Eventing
Combine events from multiple enterprise apps
Lightweight functions to microservices
Use a snippet of code to react on an event the
same way as a container-based app
Uniform consumption of external services
Enable easy reuse of remote services
Application connectivity
Standardized registration flow for enterprise
apps (SAP and others)
What is left for Kyma? 
Project isolation
Enable dev and ops to work together
End-to-end traceability
… across your distributed and heterogeneous
landscale
All-in-one package
Install it yourself, get it from Cloud
marketplaces (GCP, Azure) or from service
providers (SAP, others)
…

50. 51PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
OpenSAP course: open.sap.com/courses/kyma1
Kyma Incubator projects: github.com/kyma-incubator
Kyma documentation: kyma-project.io/docs/
Where to learn more?

51. 52PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Our approach to grow the community
 Feedback
 Real-world scenarios
 Contributions and improvement proposals
 Co-innovation
Prototype new ideas and validate them
TOGETHER with the community.
Get involved in project Kyma
kyma-project.io
github.com/kyma-project
@kymaproject
linkedin.kyma-project.io
slack.kyma-project.io
youtube.kyma-project.io
YouTube
stackoverflow.kyma-project.io
StackOverflow

52. Krasimir Semerdzhiev / @evilyeti
Thank you!