One connect link gives your agency access to Google Ads MCC, Analytics 4, Business Profile, Tag Manager, Merchant Center and Search Console — all from a single OAuth flow.
MCC (My Client Center) is Google's Manager account structure. Instead of being invited to each client ad account individually, MCC gives your agency a single management layer that sits above all client accounts. Joiyn automates the entire MCC linking process: your client confirms access, and every ad account under their Google account is linked to your MCC instantly.
Without Joiyn
Manual, per-account access
Request MCC access per client account individually
Wait 24-72 hours for each manual invitation
Chase clients for Google login credentials via email
Manage separate admin invites for GA4, GTM, GMB, etc.
No audit trail of who approved what and when
With Joiyn
One link, instant MCC link
One link grants MCC access to all client ad accounts
Instant provisioning the moment your client confirms
Client logs in with their own Google account securely
All 6 Google services connected in a single OAuth flow
Full audit log of every access grant and permission change
FAQ
Google-specific questions
What is MCC and do I need it?
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Does my client need a Google Workspace account?
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Can I access multiple GA4 properties?
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What permissions does Joiyn request?
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What if my client has accounts across different organizations?
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All of Google. One link.
Send one connect link. Your client signs in with Google, selects their properties, and you get instant MCC and service access.