Project roles and permissions
As with any system, you need some basic authentication and permission capability for the first level of security of your information. Jira Cloud provides you with authentication of users when you create your initial instance of Jira/Jira Work Management. Authentication is simply the process of validating that a user is who they really are when they log into the system.
As your organization grows, you can extend this capability using the Atlassian Access tool to provide more control of the user setup and authentication process. See https://www.atlassian.com/software/access for more information.
There are two ways to control access to your project, both of which involve the permission scheme. One route would be to handle all the permissions directly in the permission scheme by granting permissions directly to individual users or groups.
But this is the least advised method, as it hampers the sharing of the scheme with projects that have different...