You mention S3 and Athena, but also that you're building for longevity. Are you planning for the future obsolescence of AWS, or going to cross that bridge when you get to it?
The S3 files are mirrored to a local drive as a collection of plain .md, .jpg, etc. The Athena search index is secondary in importance to the source data and not necessarily permanent (presumably the options for "take this folder full of files and let me search it" will only improve over time).
That being said, one of the reasons I chose S3 vs. other AWS services or other companies is because I expect it to be around for a very long time. (Just because I've preserved the option of migrating away doesn't mean I relish the idea.)
That being said, one of the reasons I chose S3 vs. other AWS services or other companies is because I expect it to be around for a very long time. (Just because I've preserved the option of migrating away doesn't mean I relish the idea.)