Amazon has announced an SLA (Service Level Agreement) for its Simple Storage Service (S3).
S3 is great, and I noticed how it kept getting mentioned at the Future of Web Apps conference last week. The fact that people are using it, and liking both the performance and the price, says far more about it than any amount of PR.
The lack of an SLA was a snag for enterprise users who need assurance of reliability. So now there is one – but how much is it worth? Not much. The SLA guarantees 99.9% uptime, but you only get between 10% and 25% discount on your usage fees if it slips below that. There’s no coverage for consequential loss:
…your sole and exclusive remedy for any unavailability or non-performance of Amazon S3 or other failure by us to provide Amazon S3 is the receipt of a Service Credit
Given the keen pricing of S3 that’s not surprising. Still, the SLA does have some value, if only for setting expectations about what level of service S3 is likely to deliver.
Update: WordPress is now using S3 as its primary store, but Matt Mullenweg says the SLA means little to him.