Arrabiata Solutions is a digital agency founded in 2006 with offices in Munich and London. They offer full-service digital solutions from conception to realization. The document discusses various communication APIs for HTML5/JavaScript including status quo techniques like JSONP, CORS, and messaging APIs as well as newer techniques like Server-Sent Events and Web Sockets. It provides an overview of how each technique works and when to use each one based on factors like supporting cross-domain communication, returning data, using backchannels, handling long-running processes, and performance.