Here is a list of some of the features that WordPress has to offer (in no particular order):
- Exchangeable designs through WordPress themes, which are also further customizable via WordPress Customizer
- Extendable through WordPress plugins
- Unlimited posts and pages
- Unlimited categories and subcategories
- Unlimited tags
- Mobile-friendly and optimized to be viewed on all devices and screen sizes
- Flexible—create any type of website you want
- Scalable—can handle any size of website
- Ability to post via email and mobile devices (there are apps available for all major mobile platforms, including iOS and Android)
- Compliance with the World Wide Web Consortium (W3C) standards, although it does depend on the theme you're using
- Import of data from other blogs (Moveable Type, b2evolution, Blogger, and others)
- Easy to administer...