You would deploy your main Sitecore application code to the Content Management and the Content Delivery app instances. Based on your list that would be:

- foobar-acc-cd
- foobar-acc-cm

If you do have any custom code for processing xDB data, you may also need to deploy to the processing instance, which looks like 

- foobar-acc-prc

in your list.

###Update from comments:

Ass mentioned in the comments below, there are scenarios where you might need to deploy models/dlls to the xConnect services too.