Twilio recently announced a developer preview for its new Twilio Sync offering. Twilio Sync maintains a single state synchronization infrastructure in the cloud that third party developers can utilize to introduce real-time synching and collaboration functionality into their apps.
Amazon just dropped prices on its popular Amazon S3 API, which provides storage to much of the web. The service will pass 1 trillion objects stored this year. With that volume comes opportunities to lower the costs, as we've seen from other companies whose entire product line includes APIs.