Environments

Currently the conventions are:

local - your local machine
test - the CI build environment, where code is built, integrated and tested
qa - Where code is more thoroughly tested, possibly involving QA team and manual testers
uat - a replica of production for staging. Built and tested code for product owner review, before release. Dependant services may also test against uat.
production - what it says on the tin. Code released here is available to customers.

At a minimum, a project should have local, test, uat and production.