Wix's built-in content management system, and honestly one of the biggest unlocks once you understand how it works.

It lets you manage your content dynamically from the backend, so instead of going page by page every time something changes, you update it once and it updates everywhere on the front end.

A good example: I manage a client's website where team members come and go. Because I set it up in Wix CMS, I can just switch someone from visible to hidden in the backend and it's done. Same thing with my own projects page on KDC Marketing, every project follows the same design, I just fill in the details for each one and it stays consistent.