[Serverless]: Document the full list of Observability limitations

[ppf2]

Serverless Docs

Elastic Observability

Description

Currently, https://www.elastic.co/guide/en/serverless/current/observability-limitations.html contains a single item specific to max ingest rate. There are definitely more limitations for Observability on Serverless such as universal profiling and RUM not being available yet. We should compile the full list and document accordingly.

Resources and additional context

https://www.elastic.co/guide/en/serverless/current/observability-limitations.html

[lucabelluccini]

@alaudazzi FYI

[lucabelluccini]

I have a list which I collected from @chrisdistasio in private

[chrisdistasio]

thanks for opening.

should move this request to observability-docs.

happy to work with the team there on the content.

cc: @dedemorton

[dedemorton]

Moving this to observability-docs....

[dedemorton]

@chrisdistasio Can you make sure this issue gets populated with the specifics of which limitations need to be documented? Thanks!

[chrisdistasio]

@lucabelluccini let's sync on this to understand the need for what we want to have documented-- internally and externally-- to ensure it's up to date and accurate

[chrisdistasio]

related issue: #3394

[chrisdistasio]

@lucabelluccini and I had a discussion and will plan to take the following actions:

• itemize an internal list for validation
• create a kb documenting differences
• work with docs team to tag stateful docs with an indicator for features that are not available in serverless.