I will show you some use cases: - have different versions of libs/apps on the same OS (or run different OS's) - tinker with linux kernel, etc without breaking

I will show you some use cases: - have different versions of libs/apps on the same OS (or run different OS's) - tinker with linux kernel, etc without breaking your box (remember the 90's?) - building immutable images packed with dependencies, ready for deploy - testing distributed software without VMs (because containers are faster to run) - if you have a big box (say 64gb, eight core or whateva) or multiple big boxes, you can manage the box resources through containerization, which can be useful if you need to run different software. Say every team builds a container image, then you can deploy any image, do HA, Load balancing, etc. Ofc this use case is highly debatable