Not so long time ago I had written a tutorial about the CloudKit, the cloud solution provided by Apple. So, implementing cloud-related features in applications is now a common task, and users expect to see such features more and more to existing and new applications. Nowadays things have dramatically changed, as technology has improved significantly and all the previous problems have been overcome. There were not many services offering APIs to do that, and moreover just a small percentage out of the total users had a constant Internet connection (3G/4G connections, or constant access to Wifi networks). Finding integrated cloud services into an iOS application some time ago was something quite rare.
