Even though we use the open source version of the ELK stack, customers do not rely on Elastic from a delivery standpoint - for download, installation, or support. In fact, customers must install the version of ELK that we package and deliver.
Why do we mandate this? Because we add our plugins to ELK to facilitate the integration with PeopleSoft, which includes (amongst other things) security for search data access control and the ability to embed analytics in the user interface.
It is important to remember that we take a version of ELK, add our plugins, package, and ship that as part of PeopleTools. Currently, customers install Elasticsearch and Kibana using the ELK DPK (Deployment Package). Since we package and ship ELK, we support it through the lifetime of that PeopleTools release. Consequently, this also means we provide any updates and patches necessary for ELK as part of PeopleTools (ELK DPK).
From a PeopleSoft perspective, worrying about the Elastic end of life dates is unnecessary. However, it is incredibly important to stay current on your PeopleTools!
Oracle/PeopleSoft Enthusiast, Developer, Architect, Strategist, Advocate