I think many places with a setup like you describe don't have in-house staff to manage their tech. I briefly worked for an agency early in my career where most

I think many places with a setup like you describe don't have in-house staff to manage their tech. I briefly worked for an agency early in my career where most of the clients had WordPress or Magento sites with low to moderate traffic. They would usually only need a few hours a month each, so it wouldn't have made sense for them to hire full time programmers or sysadmins.