WordPress is an open-source software that runs 34 percent of all websites and has become a go-to tool for building websites due to its ease of use and customizability. The platform dates back to 2003, initially focusing on the needs of writers but expanding into various types of websites through its ecosystem of themes and plugins. With thousands of integrations available, WordPress can be easily automated with tools like Zapier, allowing users to connect their website to other web services and streamline their workflow.