## Features of the World Wide Web

- HyperText Information System
- Cross-Platform and Cross-Device
  ...then and now
- Distributed
  - 261 million unique domains, 191 million active sites, and 10 million "web-facing" computers
    (Netcraft Web Server Survey, August 2020)
- Open Standards
  - HTML, CSS, JavaScript, HTTP, TCP/IP
- Open Source
  - Mozilla, WebKit, Apache HTTP Server, JavaScript, PHP, Python, etc.
- Web Browser: provides a single interface to many services
  - Information, Shopping, Banking, Communication, Finance, Business, etc.
- Dynamic, Interactive, Evolving