If you're building a new website or replacing an old one, one of the first questions is which platform to build it on. Ask five people and you'll get five strong opinions. The truth is that the right choice depends less on which platform is "best" and more on what your business needs the site to do, who will maintain it, and where you want it to be in a few years. Here's a plain-English look at the most popular options and how to decide. Start with what the website has to do