The document discusses the rise of Comet technology, which allows for highly interactive websites by enabling real-time updates from servers to browsers without polling. It covers the technical challenges of implementing Comet, different connection options like long polling and websockets, API styles including pub/sub and data sync approaches, and considerations around inboard vs outboard Comet architectures. The goal of Comet is to make the web more like a persistent connection instead of a traditional request-response model.