WordPress glossary
A/B Testing
Compare two different versions on the website to find the most effective one.
Access Control List (ACL)
Set user permissions in detail on the website.
Administrator
The user role that provides full access to the administration interface of the website.
Affiliate Marketing
Affiliate program in which commissions are paid to those who offer products and generate sales.
Ajax
Asynchronous JavaScript and XML, which allows websites to request and update data without reloading the page.
Action Hooks (Action Hooks)
Points in WordPress where you can run custom code.
Default template
The template that WordPress automatically uses for new pages and posts when no one else is selected.
API
An application programming interface that enables communication between software.
Arbitrary Hooks
Custom action or filter hooks that developers can use to insert their own code.
Automattic
The company that runs WordPress.com and develops several popular WordPress plugins.

