NET53494 Extensions in the Age of S/4HANA

NET53494 - Extensions in the
Age of S/4HANA
Christian Lechner
@lechnerc77
https://people.sap.com/christian.lechner

How do we
develop
extensions?
15/11/2017 SAP TechEd 2017 Barcelona - NET53494
SAP Business Suite
User Interface
Application
Database
RICEFW - Implementation Add Ons
Modifications

What are
(some)
results?
• Tight coupling to SAP standard
• High probability of unused code
• High effort for testing
• Patches and upgrades are no fun

Why do we
have
rethink?
SAP’s Cloud First Strategy
S/4HANA Deployment
New Choices = New Decisions Necessary

What
choices do
we have?
© SAP SE

What choices
do we have?
-
Classic
Extensions
© SAP SE

Classic
Extensions
© SAP SE

Classic
Extensions
-
Some
Thoughts
Consequences
• Not transferable to the S/4HANA Cloud (usually)
 Lock in to on premise
• Risk to run into “old habits”
(strong coupling, modifications, …)
Tips/Mitigation
• Stick to S/4 Programing model for Add Ons
• Care about interfaces/APIs (lose coupling, ATC)

What choices
do we have?
-
In-App
Extensions
© SAP SE

In-App
Extensions
© SAP SE

In-App
Extensions
-
Some
Thoughts
Chances
• Scenario: “RICEFW”/implementation tasks
• Transfer to the S/4HANA cloud is possible
• Restrictions can be a good thing:
• challenge superfluous requirements
• stick to standard
• Tooling is constantly improved
Risks
• Abuse of mechanism for Add On development
• (Temporal) Limitations

What choices
do we have?
-
Side-by-Side
Extensions
© SAP SE

Side-By-Side
Extensions
© SAP SE

Side-By-Side
Extensions
-
S/4HANA
Cloud SDK
S/4HANA Cloud SDK - Enable Development
• SAP S/4HANA Project Templates
• SAP S/4HANA Types and VDM
• Multi-tenancy
• SAP S/4HANA Mocking
• DevOps: Pipeline as Code
• Quality Checks
• …
https://www.sap.com/developer/topics/s4hana-
cloud-sdk.html

Side-By-Side
Extensions
-
Some
Thoughts
Tips
• Adhere Cloud Native Development
• Java is (currently) first class citizen
• Go for Spring Boot + Spring Cloud
• Use the SAP S/4HANA Cloud SDK
Keep in mind
• This is NOT ABAP development (skills!)
• There is still a connection to non Cloud Native
applications aka S/4HANA

Side-By-Side
Extensions
-
“New Kid on
the Block”
© SAP SE
Welcome ABAP

Side-By-Side
Extensions
-
ABAP
ABAP in SCP - Opinions?

Side-By-Side
Extensions
ABAP
-
Some
Thoughts
In general
• Put emotions aside
• Use-cases exist for using ABAP in SCP
Keep in mind
• ABAP is not Cloud Native
• ABAP in SCP has restrictions
 in most cases no copy paste from legacy
• Not publicly available yet
• No pricing available yet
• A lot of open questions remain …

Side-By-Side
Extensions
-
SAP HANA
XSA
SAP S/4HANA: New Architectural Blueprint for
In-House Software
© SAP SE

Side-By-Side
Extensions
SAP HANA XSA
-
Some
Thoughts
In General
• Logical approach for Side-by-Side extensibility
• MTA allows a transfer to SAP CP
• Get “cloud experience” on premise
BUT
• Risk of wrong integration patterns
(cross-schema access)
• Do you need SAP HANA as DB or appliance?
• SAP HANA on premise is not a Cloud (scalability!)

Some last
words ...
SAP TechEd 2017 Barcelona - NET5349415/11/2017

Some last
words ...
SAP TechEd 2017 Barcelona - NET53494
• There is no extension silver bullet
• Choose the right approach for your problem:
 It is not an „either … or“ – combinations are
allowed and often make sense
• Keep an eye on the emerging SAP CP services
15/11/2017

Some last
words ...
• Be aware of mid-term consequences
 Not only technology counts
• If ABAP: Go for the S/4HANA programing model
• If Cloud Native: Go for Java runtime in SAP Cloud
Platform + S/4HANA Cloud SDK
• Last but not least ...
15/11/2017

Some last
words ...
… you are on a good path if you use Spring
15/11/2017

Links, Links,
Links …
Extensibility Overview:
• https://www.sap.com/documents/2015/07/2ad5
9b27-347c-0010-82c7-eda71af511fa.html
• https://blogs.sap.com/2017/09/15/get-started-
with-your-sap-s4hana-cloud-side-by-side-
extensions-in-5-simple-steps/
15/11/2017

Links, Links,
Links …
In-App Extensibility (Key User Extensibility):
• https://blogs.sap.com/2017/05/28/introduction-to-
s4hana-cloud-key-user-extensibility/
• https://blogs.sap.com/2017/05/28/key-user-
extensibility-on-sap-s4hana-cloud-ui-adaptions-for-
key-user/
extensibility-on-sap-s4hana-cloud-adding-custom-
fields/
extensibility-on-sap-s4hana-cloud-adding-custom-
business-logic/
• https://cp.hana.ondemand.com/dps/d/preview/1a93
686c176845f0832a2a73221dd90b/1511%20500/en-
US/frameset.htm?3ccb50e724b045508fea8b2cf1774
b2b.html
15/11/2017

Links, Links,
Links …
S/4HANA Cloud SDK:
• https://www.sap.com/developer/topics/s4hana-
cloud-sdk.html
• https://blogs.sap.com/2017/05/10/first-steps-
with-sap-s4hana-cloud-sdk/
• https://blogs.sap.com/2017/07/28/sap-s4hana-
cloud-sdk-faq/
15/11/2017

Links, Links,
Links …
Architecture Blueprint XSA – Side-by-Side:
• https://news.sap.com/sap-s4hana-new-
architectural-blueprint-for-in-house-software/
15/11/2017

Links, Links,
Links …
S/4HANA APIs:
• https://api.sap.com/shell/discover/contentpacka
ge/SAPS4HANACloud?section=ARTIFACTS
15/11/2017

Links, Links,
Links …
ABAP in SAP CP:
• https://blogs.sap.com/2017/09/26/overview-of-
abap-in-sap-cloud-platform/
• https://blogs.sap.com/2017/09/26/abap-in-sap-
cloud-platform-frequently-asked-questions/
15/11/2017

NET53494 Extensions in the Age of S/4HANA

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