tips for managing a project with multiple machine apps

I'm planning a project that includes three apps:

• SERVER APP - single machine on aws


• ADMIN APP - single machine on aws


• CLIENT APP - many machines on many countries

Theses apps will be developed by different teams.

Whats best practices to manage this scenario? Consider versioning, repositores, testing, different teams, etc...

1. Should I keep all apps inside a single repository? So SERVER team will have access to CLIENT app, this is wrong.


2. Should I keep each app with your repository? So testing, versioning and deploy will be a pain.