If your website isn't already mobile friendly, it should be. Google today released the Mobile Friendly Test API, a tool that lets developers automatically and quickly see if their webpages are mobile friendly. Think of it as a useful instrument for what should be a mandatory business practice.
Everybody knows about SMS these days, and as it has become a regular part of daily life here in the United States, so too have simple, easy-to-use SMS APIs become available for developers to use. But few people know that MMS - Multimedia Message Service - is just as common and pervasive a part of the U.S. mobile ecosystem, and that MMS APIs are also available.