You obviously have a good heart for asking the question! I have a feeling that whatever decisions you finally take would take into consideration the wellbeing

You obviously have a good heart for asking the question! I have a feeling that whatever decisions you finally take would take into consideration the wellbeing of your employees. I would assume that the folks who are doing the legacy stuff have the necessary aptitude to pick up the skills that are needed to automate for the future. Can their existing data center skills be translated into learning about AWS/Azure, VMs, Containerization and the necessary scripting and DSLs around those toolsets? Obviously there will be reductions in headcount but give them the option to retool for the future. Even if they are not all retained but if you retrain them then they will still have options elsewhere with relevant skillsets. You are finally running a business after all where revenue and profit are the drivers. Good luck and I would say that your employees are luckier than those who consider them as mere resources and not people with lives and loved ones to take care of.