Microsoft CRM is intended to be customisable. If you have ever scanned the Net and marvelled how you might stake your claim on the Web, like the uncountable millions of others that have done so already, then website hosting can supply you with the services to just do that. Watch out as this term isn't linked with the “Internet” as it is a net of networks, where the PCs communicate with customs apart from HTTP. The info that you see from your net browser is contained in net pages. Ecommerce.
Website hosting is about the storage of the internet pages so that folks can access them.