One can either develop a website locally or publish it online. If you want the world to see your website, it needs to be published. In order to do that you need to have a reliable web host. Now deciding a web host is another game all together.
There are numerous hosting providers out there. Some of them are free and some are paid. It is often advisable to go for a paid service since there won’t be any ads Interfering with your website. And it normally has 24x 7 chat support.
Most of the web servers are built with the Linux Operating system. And because of which they by default support PHP and MySQL. Microsoft has a server known as IIS server.