>>dabina+(OP)
The pattern here is clear: everyone loves the CDN, everyone worries about their track record shipping anything else. A database is the worst place to test whether that changes. CDN mistakes cost you cache misses. Database mistakes cost you data. The pricing model and EU story are genuinely compelling, but if the S3 compatibility timeline is any guide, I'd let this one run quietly for a year before trusting it with anything I can't afford to lose.