If you want to use SAML Single Sign-On with ADFS, you most likely have one of the below environments already.
Proceed with either tutorial, depending on that.

AD FS with LDAP User Directory

  • connect your Atlassian instance to your AD FS server, using a LDAP based user directory and enable SAML Single Sign-On

AD FS with Just In-time Provisioning

  • use SAML Single Sign-On with your AD FS server, using just in-time provisioning to create and update users in your Atlassian instance's existing internal user directory

  • please note that we are currently offering no written tutorial for migrating users via database, read here for more details

Other Info might also find following documentation helpful: