Hosting that is aimed at specific CMS platforms and tweaked optimally for them: e.g., WordPress hosting, Drupal hosting, Magento hosting, etc. In these cases, the best hosts do far more than just provide the minimal requirements for those platforms. They provide a rich, and fully managed environment so your site can perform like a well-tuned machine.
If you’re planning to run a blog, a straightforward content website, or a website with a combination of functionalities — like a blog with a store — your best bet is probably a content management system like WordPress. This would provide a stable and flexible platform for doing a number of different common business activities online. Two other popular options in this category are Drupal and Joomla.