Atlassian Access is an additional subscription applied across the Atlassian cloud products like Jira
Software, Jira Service Management, Jira Work Management, Confluence, Bitbucket, etc. So it is needed for
Single Sign-On(SSO) or any Cloud Service which comes under Atlassian Access.
2. Domain Verification:
The first step of Atlassian Access starts with the Domain Verification Process to enforce SAML SSO on the
managed user accounts. This process verifies that you own a valid domain for managing the user accounts
and use the same domain name for the email addresses.