This SDK enables access to the PubNub Mobile Push Gateway for iOS applications. PubNub allows you to deliver APNS and/or GCM push notifications for connections to the PubNub network, to receive published messages in realtime. The Mobile Push Gateway add-on provides a way to fall back to APNS and/or GCM push notifications. PubNub is a Push technology intended specifically for high-message-volume applications and games. It is a cloud-based, real-time messaging service for mobile phones, tablets, TVs, HTML5 web browsers and game consoles.
As a developer, good ways to store those often-reused snippets of code that correctly solve a common problem is always useful. Now, there are other solutions to this problem, such as the Snipt API, which I covered previously, but Pastebin.com is the most often used, perhaps because it has beeb the favored place for notes from hacker group LulzSec. Pastebin has a nice, full-featured API, and is simple and free to use, at least at a basic level.
There are a number of factors coming together to fuel the growth of APIs. Without a doubt, one is the corresponding growth of mobile devices and the distribution of services across multiple platforms. An API is often required to create one native mobile application and becomes incredibly important when supporting many devices. Sometimes these private APIs are made public, sometimes they aren't.