On demand envs for teams is a incredibly liberating experience for people who have been tied down to a single or small number of environments forever, our devs have been very happy with it. There are some interesting problems on demand environments create that persistent environments don't have, like data seeding for your apps (as naive state is an env comes up blank), extracting secrets/keys/credes/certs from the env now that they are different everytime you deploy etc. We have patterns for these problems now and has really forced us to mature our process.

Dockup has these:

- Seeding DBs with prod-like data is easy and works super fast so you don't have to wait around for a long time until you do a database dump/restore. We can do this in Dockup because we can maintain a pool of single-use DBs for your deployments.

- Deployment form to mix and match different versions of your apps (example: you can try how branch-foo of frontend and branch-bar of backend work together)

- Users who know how to write Dockerfiles can easily setup Dockup. Many of our users are project managers and QA and they find the UI easy to use.