Partial Copy and Full sandboxes require an additional license to be purchased (contact your Salesforce account manager for more information).
There is no mandatory sandbox configuration setup, but let's have a look at what we can design.
Take a look at the following sandbox architecture, which can be adapted to most projects:
In the preceding diagram, Production is the only organization that is not a sandbox.
Dev 1, Dev 2, and Dev N are part of the Developer (Dev) sandbox and have been assigned to the three developers that are implementing the following project: due to the kind of job developers do, these sandboxes ...
