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UPDATE
This question inspired a blog post. It is a bit of a read but I hope it should make the evolution of models clear.
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Hi Pablo,
Community member since 2004! Impressive; Good to see you are attending SAP TechEd in 2020 this year.
Good question but as I read it, it seems you are mixing two concepts; a programming model with an application platform. The topic can be confusing as XSA is both a programming model and an application platform.
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To start from bottom to top:
Is there some kind of roadmap depicting the strategy for these developments.
Yes, there is the SAP Road Map Explorer. There is one for products like SAP HANA, platform edition but also for concepts, like Development Efficiency
However, these resources do not directly address your question.
TechEd is also a good source information. Check the strategy talks and road map sessions, but also regular sessions and workshops are relevant (recordings will be made available after the event.
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It seems that CAP is the model that SAP is fostering also for this hana developments in the cloud, So will hana xs advance be deprecated ? I guess HANA XSA is still an option for on-pre.
SAP HANA XS Advanced (XSA) is an implementation of Cloud Foundry technology that adds an application platform to the SAP HANA in-memory database. XSA was introduced in 2015 (SPS 11) to replace (in the long run) the initial implementation based on SpiderMonkey, XS classic model or XSC.
XSC was deprecated in 2018 (3 years and 5 releases after the introduction of XSA) and is no longer available with SAP HANA Cloud (2020). However, it is still supported for the platform edition until 2025 (7 years after deprecation notice and 10 years after the introduction of XSA).
XSA and the mirroring Cloud Foundry Runtime of the SAP Cloud Platform are not deprecated. If you want to speculate and fantasise, we could image a future where all applications are hosted on Docker containers orchestrated by Kubernetes (and Gardener), i.e. on the SAP Cloud Platform Kyma runtime, and no longer on the Cloud Foundry platform. However, CF works very well together with Kubernetes, so this is not likely to happen any time soon. Another technology may have evolved by that time (late 2020s).
CAP and the release of the SAP Business Application Studio are related to two new strategic choices: cloud-first and multi-cloud. It is more generic. CAP supports both Kyma, CF, and complements the ABAP RESTful programming model (RAP)
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Cloud application programming model (CAP) allows you (among other things) to create hana db artifacts using CDS. So, Does this replace HANA XS Advanced for developing hana native applications in the cloud ?
As documented, SAP HANA Developer Guide for SAP HANA XS Advanced Model
the XS advanced programming model fully embraces the Cloud Foundry model and leverages its concepts and technologies. In areas where Cloud Foundry as an intentionally generic platform for distributed Web applications does not address relevant topics or offers choice, the XS advanced programming model provides guidance that is in line with the general Cloud programming model.
In other words, the XSA programming model adds technologies like HANA Deployment Infrastructure (HDI), the XSUAA service, the Application Router, SAP-developed buildpacks, XSJS compatibility-layer and other enhancements specific to SAP HANA (and SAP Cloud Platform).
This remains relevant as long as we have SAP HANA XS Advanced for the SAP HANA platform and the Cloud Foundry Runtime for the SAP Cloud Platform
Bluesky
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