UNIX, is the 'standard' open-source operating system of internet web servers, but due to agressive marketing, Microsoft have thrown a monkey wrench into the works by introducing server software that combined with their OS monopoly lends an incentive to force everyone (especially newbies) to use only Microsoft products and software to create, upload and maintain their websites! This could lock you into a services trap that forces you to shop for hosting only among those providers who offer Microsoft's server-software, seriously limiting your freedom to get the best web hosting rates for your site.

The most onerous issues here, are that their software is secret and proprietary, so that any specialized server application you develop for your site, instantly becomes Microsoft's 'property' since they own all of the code involved, and it is simply unknown how many proprietary security issues exist with it. They call this backroom reverse-engineering "innovation" but there is basically nothing you can program using their tools for their systems that they cannot streamline beyond recognition and incorporate into their products.