Quickwit is compatible with S3-compatible object storages yes. I don't remember the feedback for R2 specifically, but we have users running Quickwit on S3, GFS, Azure, MinIO, Garage, IBM, and all of the major chinese clouds.

> Secondly, do you see Quicwit being used for analytics, such as tracking daily visits or analyzing user retention?

Excellent question. Quickwit is very fast on ElasticSearch aggregations. We do not support cardinality-aggregation but it is scheduled for version 0.8.

Analyzing user retention and generally speaking running complex analytics, will not be possible any time soon. Maybe next year?