Building Smartphone-Optimized Websites

Here's a story that I read:


Google supports smartphone-optimized sites in three configurations: Sites that use responsive web design, i.e. sites that serve all devices on the same set of URLs, with each URL serving the same HTML to all devices and using just CSS to change how the page is rendered on the device.


via Pocket https://developers.google.com/webmasters/smartphone-sites/details