The document discusses building modern contact center applications using web technologies. It argues that most contact centers are outdated and use technologies like Asterisk that are difficult to maintain and evolve. The author advocates moving contact centers to web technologies like HTTP, REST, WebRTC, and microservices for better scalability, distributed computing power, and faster development. Specific technologies mentioned include Asterisk as a media engine, ARI, Respoke, and IBM Bluemix. The document provides an example architecture using SIP, ISDN, ARI, Respoke, and WebRTC connected through HTTP and websockets. It also discusses using web APIs and services for features like speech to text, sentiment analysis, and more. The author invites the reader to contact him