Abstract: Disclosed are embodiments for facilitating a backup system for observability, communication, and control of autonomous systems. In some aspects, an embodiment includes initializing an instance of a backup tool to provide observability, communication, and control of a fleet of autonomous vehicles (AVs) responsive to an outage of primary fleet tool services; storing AV data received from the fleet of AVs in in-memory storage of the instance of the backup tool; populating a cache of the backup tool with semi-static data corresponding to the fleet of AVs; authenticating a user requesting access to the instance, the authenticating to utilize credentials of the user established with the primary fleet tool services; and facilitating the issuance of one or more control commands to the fleet of AVs based on the AV data stored in the in-memory storage and based on the semi-static data stored in the cache.