Hi @msicc , Great question; so it's the same product/software (ProGet Enterprise), just with different packaging/quantity: Essentials consists of a single license of ProGet Enterprise Complete consists of two licenses of ProGet Enterprise plus Services It's not uncommon to have multiple licenses for non-production scenarios: https://docs.inedo.com/docs/proget/administration/license#licenses-for-non-production-testing-environments Licensing is per instance, which can be a single-server installation or a clustered (multi-server) installation. -- Dean