AMP HTML is a subset of HTML for authoring content pages such as news articles in a way that guarantees certain baseline performance characteristics. Being a subset of HTML, it puts some restrictions on the full set of tags and functionality available through HTML but it does not require the development of new rendering engines: existing user agents can render AMP HTML just like all other HTML. If
![AMP HTML Specification](https://cdn-ak-scissors.b.st-hatena.com/image/square/f1c7e09b964843ce97a1d30b0dc5ead3e17f9c6d/height=288;version=1;width=512/https%3A%2F%2Famp.dev%2Fstatic%2Fimg%2Fsharing%2Fdocs-guide-600x314.png)