MariaDB Galera cluster, an in-built high availability feature is very useful for a production-grade system.
Easy setup and configuration make it a go-to system for relational DB.
Having multiple DB engines (InnoDB, Aria, RocksDB) is very helpful in a single cluster and is able to tune according to the business requirements (read heavy vs write heavy). Review collected by and hosted on G2.com.
Some features available in MySQL 8 are yet to be available in MariaDB which is making some of the migration pipeline getting delayed.
No full-fledged native incremental backup support. Review collected by and hosted on G2.com.