Heroku is excited to announce the addition of a third availability zone (AZ) for our Private Spaces product offering . Three availability zones make Private Space apps more resilient to outages. We’ve prioritized this improvement as part of our focus on mission-critical features to make the Heroku Platform even more reliable. The changeover to three availability zones is fully managed by Heroku. Heroku handles all maintenance, upgrades, and management of Private Spaces, so our customers can focus on delivering value to their users without worrying about the underlying infrastructure. What are availability zones and how does Heroku use them? All AWS regions have multiple availability zones . An availability zone is an isolated location within a region. Each has its own redundant and separate power, networking, and connectivity to reduce the likelihood of multiple zones failing simultaneously. One or more physical data centers back each zone.…