What's the difference between Cloud and Server options?
With JIRA Software Cloud, we host and setup your JIRA Software site in the cloud for you. This is generally the best option for teams who want to get started quickly and easily, and for teams who don't want to manage the technical complexity of hosting themselves.
With JIRA Software Server and JIRA Software Data Center, you host JIRA Software on your own hardware and you're able to customize your setup however you'd like. This is generally the best option for teams who want to manage all the details of the setup and don't mind the additional complexity of hosting themselves.