We are currently using Azure IoT edge on ubuntu 16.04, now are planning to upgrade the OS and Azure IOT edge version( to 1.1 or 1.2). Our entire solution is running on production environment. We have 2 options for the OS, Ubuntu 18.04 and Ubuntu 20.04 which supports IOT-Edge 1.1+.
Since, Ubuntu 20.04 is latest LTS version of Ubuntu we are planning to upgrade to that, but as this document Ubuntu 20.04 is under Tier 2 support.
My question is, will it be fine and reliable to upgrade to Ubuntu 20.04 for Azure Iot Edge? or Ubuntu 18.04 will be a better option? and why?