Hypertext Transfer Protocol (HTTP) is an Application Model based on client - server communication. Internet Engineering Task Force (IETF) released HTTP 2.0 in 2015.
HTTP 2.0 can send parallely multiple requests using connection like Transmission Control Protocol (TCP). In HTTP 1.1, each stream are request and responses. In HTTP 2.0, multiple stream going over single connection.
• headers compression
• push notification
• intelligent packet streaming management
• parallel loading of page elements over a single TCP connection.