On-demand resources (ODR) is introduced in iOS 9. ODR are app contents that are hosted on the Apple App Store and are separate from the related app bundle that you download. They enable smaller app bundles, faster downloads, and richer app content.
iOS 9 introduces On Demand Resources, enabling the efficient delivery of rich games and full featured applications using dynamically loaded content. Significantly reduce the time between purchasing and running an app from the App Store, while also decreasing the required storage space by downloading and retaining only content that is necessary. Dive into the latest enhancements in app packaging and learn the APIs to allow your app to acquire only its essential resources.
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