WP stands for WordPress, which is a popular open-source content management system (CMS) used for building websites and blogs. It is an online website creation tool written in PHP. WordPress is known for its simplicity and powerful features, making it one of the easiest and most powerful ways to create a blogging website.
WordPress was first released on May 27, 2003, by its founders, American developer Matt Mullenweg and English developer Mike Little. The first version included features like a new admin interface, new templates, and generated XHTML 1.1 compliant templates.