Accurate timing is essential for effective operations in today’s data centers. An ePRTC synchronization source can offer the levels of precise synchronization required and remove vulnerability to GNSS outages. With the latest optical timing channel (OTC) technology, PTP-optimized optical transport can be used to distribute accurate timing all the way from the core of the network to the edge. What’s more, this can be delivered through GNSS/GPS-backup-as-a-service (GBaaS), whereby a specialized service provider operates a robust and reliable network, supplying precise and secure timing as a backup to highly vulnerable GNSS. In his ITSF 2022 presentation, Igal Pinhasov explored the value of utilizing GBaaS to provide accurate time for data centers using optical timing channel technology over long distances.