Differences between TeamCity Cloud Enterprise and TeamCity On-Premises – Support | JetBrains

Question

How is TeamCity Cloud Enterprise different from TeamCity On-Premises?

TeamCity Cloud Enterprise is mostly the same in functionality as the on-premises versions of TeamCity. The main differences between them are:

TeamCity Cloud Enterprise is hosted, maintained, and updated by JetBrains. TeamCity On-Premises, as a self-hosted solution, requires maintenance.
Some third-party plugins may not be installed on the TeamCity Cloud Enterprise instance. The list of supported plugins provides more details.
TeamCity Cloud Enterprise has JetBrains-hosted build agents ready to use while also allowing the use of self-hosted agents. This article provides more details. JetBrains-hosted build agents are not available for TeamCity On-Premises.
TeamCity Cloud Enterprise and TeamCity On-Premises have different licensing models. The documentation provides more details: TeamCity Cloud Enterprise Subscription and Licensing TeamCity On-Premises Licensing
In TeamCity Cloud, the NuGet feed is not available out of the box. However, it can be enabled on demand.
Non-default agent tools are not available for the JetBrains-hosted build agents. The JetBrains-hosted agents come with all default agent tools preinstalled. If non-default agent tools are required, the self-hosted build agents should be used.
It's not currently possible to use external S3 artifact storage in TeamCity Cloud. TeamCity Cloud uses S3 to store artifacts by default, but it cannot be changed; it's not currently possible to use own S3 storage.
JetBrains manages TeamCity Cloud's upgrades. The related functionality in the UI is not available to users.
Multinode setup is not available for the TeamCity Cloud users. The infrastructure is managed by JetBrains.