“The World Wide Web is a network-spanning information space of resources interconnected by links. This information space is the basis of, and is shared by, a number of information systems. Within each of these systems, agents (people and software) retrieve, create, display, analyze, and reason about resources. Web architecture includes the definition of the information space in terms of identification and representation of its contents, and of the protocols that support the interaction of agents in an information system making use of the space. Web architecture is influenced by social requirements and software engineering principles, leading to design choices that constrain the behavior of systems using the Web in order to achieve desired properties of the shared information space: efficiency, scalability, and the potential for indefinite growth across languages, cultures, and media. This document reflects the three bases of Web architecture: identification, interaction, and representation.” (W3C)