A nice middle ground is hiring the hardware eg. dedicated servers. Then you can install whatever software you want on them. And you can hire servers in many dat

A nice middle ground is hiring the hardware eg. dedicated servers. Then you can install whatever software you want on them. And you can hire servers in many data-centers for redundancy. You get full control of the software, but don't have to worry about hardware, Internet connection, power, etc. If there are problems on one server you just revert traffic to another. Migrating from one provider to another is super easy, compared to serverless, SaaS and PaaS.