[brianwawok]

Just lighter weight. Ways that containers can be cool:

You need to start 10 containers locally to dev your app. Spinning up a local 10 VMs kind of sucks. 10 containers can be pretty quick.

(now if you really need 10 containers is another question, and some people clearly over split their architecture).

[XorNot]

Containers are just a way to launch threads without polluting your local namespace or system. It's a way to say "hey, this stuff shouldn't interfere with anything else".