The RevenueCat Displaying Products Java Sample Code demonstrates how to build dynamic paywalls and control available products remotely. Additional languages available in Swift, Objective-C, Kotlin, Flutter, React Native, Cordova, and Unity languages.
SEOmoz, a leader in SEO software, has offered link intelligence APIs for a few years (Mozscape being the latest). Although Mozscape has garnered high adoption rates (over 10 million requests/day), customer feedback uncovered shortcomings. SEOmoz now knows that 10 requests/second and a max of 50 URLs/batch "is not able to support everyone's use case." Accordingly, SEOmoz enhanced Mozscape API capabilities and is currently in beta. Although the beta is in its early stages, throughput has increased 400%.
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.