To add, hypervisor is very low level, below the operating system often. Hypervisors allow you to run multiple operating systems on the same hardware.

Containers are isolated processes running within an operating system using stuff like cgroups.

It has been years since I played with it but OpenStack is a suite of tools to build a data center like AWS or Azure. You can get the VM bit up and running pretty quick with basic packages on an Ubuntu system if you want to play with it, but again it has been years.

What is your goal? Playing with kvm may be a better path if you want to understand virtualization.

If you want to upskill for a job, I’d see if there is a certificate to work on. Even if you don’t want the cert, the curriculum might be a good starting point.

Signal

Interesting what do you mean? I use signal but I can’t get anyone other than my ex wife to use it with me. It is so much nicer than google voice or the texting app, regardless of the end to end encryption.

I feel like that is more or less to be expected. A ton of people found Lemmy during the reddit protests. Now that the protests are gone and Lemmy has had its growing pains some users are leaving, going back to reddit or other places. If we keep using it and making content users will grow organically.

Lemmy is having an identity crisis of sorts. It was built to be decentralized yet we (users) seem to want to centralize everything and we all go to a few of the largest instances.