We use MariaDB on our Shared, Cloud, and WordPress hosting packages.
MariaDB is an enhanced replacement for MySQL. It has an improved query optimizer, gets updated regularly, and its overall performance is much better compared to MySQL.
You can check the current version of MariaDB used on your server in Hosting → Manage on the left panel:
While it’s displayed as MySQL version in hPanel, please keep in mind that it’s a version of MariaDB
In case you are using MySQL and want to know if your database will be compatible, check this documentation: MariaDB versus MySQL: Compatibility