When I was building a timelapse application, TimescaleDB stood out as easily the fastest way to query my data (~5M images and growing) with varying window sizes and granularity. Since the cloud providers have whitelists of PostgreSQL extensions, previously the only way to use Timescale was via self-managed PostgreSQL. Mine wasn't an IoT application, but if the performance is as good as they claim at large IoT scale it seems like AWS will also have to integrate (or copy?) TimescaleDB.