The official Plenigo iOS SDK by Plenigo calls the Plenigo RESTful API which allows developers to integrate an e-commerce platform for digital media. It supports billing, analytics and subscription management.
We are all familiar with online commerce these days. You want to buy something while shopping on Amazon or any other online destination: You create a profile and enter your credit card number; you purchase physical products, have them mailed to you and get the instant gratification of a digital purchase.
Although you may not realize it on the surface, DevHub, the free site builder and hosting platform, is effectively a very sophisticated mashup using over 40 different external APIs. The Seattle-based startup, now with 10,000 site publishers who've built over 100,000 sites, have recently launched a major upgrade with new site editing tools, more content (API) partners, and new monetization tools. Their core offering takes data from APIs and other content sources as a way for niche publishers quickly create content-rich sites along with built-in monetization options: