Signal18 provid an orchestrator for high availability on top of MariaDB 10.x and MySQL & Percona Server 5.7
Including topology detection and topology monitoring, enabling on-demand replicas to leader promotion (also known as switchover), or electing a new write leader on failure detection (also known as failover). It enforces best practices to get at a minimum up to zero loss in most failure cases using by default semi-sync replication.
Multiple clusters and proxies management is just a foundation DBAAS provisioning complex clustered micro services solutions on top of your infrastructure to deliver best practices for HA and Scalability, Configuration Maintenance, Backups.