WordPress is an open-source content management system that allows individuals and organizations to create, manage, and publish digital content on the web without writing code from scratch. Originally launched in 2003 as a blogging platform, WordPress has grown into the most widely used CMS in the world, powering a substantial portion of all websites currently online.
As an open-source project, WordPress is developed collaboratively and its source code is freely available for anyone to use, modify, and distribute. This means no licensing fees for the core software itself, and no single vendor controls its direction. The project is maintained by a global community of developers, designers, and contributors who continuously improve the platform, fix security issues, and release new versions.
At its core, WordPress separates content from presentation. Content - pages, posts, media, user data - is stored in a database, while the visual design is controlled by themes. This separation makes it straightforward to redesign a site without touching its underlying content. On top of that, functionality can be extended through plugins, which are modular add-ons that introduce specific features such as contact forms, e-commerce capabilities, SEO tools, or membership systems.
WordPress runs on a standard LAMP stack - Linux, Apache, MySQL, and PHP - making it compatible with a wide range of hosting providers. The installation process is well-documented and widely supported, which has contributed significantly to its adoption across technical and non-technical users alike.
It is worth noting that WordPress exists in two distinct forms. WordPress.org refers to the self-hosted, open-source software that can be downloaded and installed on any compatible web server. WordPress.com is a commercial hosting service built on the same software but with managed infrastructure and additional constraints on customization. The distinction matters for developers and site owners making architectural decisions.
Because of its flexibility, WordPress is used across a broad spectrum of use cases - personal blogs, news publications, marketing sites, documentation portals, and large-scale content platforms. Its extensibility through the REST API has also made it a viable choice as a headless CMS, where it serves as a content backend for frontends built in other technologies.