How does Falcon Platform Cloud work?
Cloud uses Google web services to provide a scalable and geo appropriate hosting solution for your app.
A build is a full build of a particular commit. This is not accessible unless it's deployed. Having builds for each of your commits means it's near instant to update your environments.
Deployments are when a build has been pushed to an environment.
The number of environments available depends on your Cloud plan. An environment is a complete infrastructure with an accessible URL.
This refers to the code repository for your site.