Apple has announced CloudKit, a new way for developers to create cloud apps. Apple takes responsibility for the server-side elements of apps. This leaves developers with a greatly simplified client-side development experience.
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This means developers should not have to worry about managing servers for their iOS apps. Apple handles everything for free, with some limits. For instance, apps can store up to a petabyte of assets on Apple’s servers. Other rate-limits come into play at large scales.