Clarification on CASA Assessment Requirements Across Multiple OAuth Apps / Scopes

Google Workspace Developers Q&A
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Hi everyone,

I am researching the Google CASA ecosystem and trying to understand its total addressable market (TAM).

Google documentation explains when applications require CASA assessments, but I cannot find an aggregate figure for the total number of applications globally that are currently subject to mandatory CASA assessment.

Does Google publish, or does anyone know of, an approximate figure for:

  1. Total applications currently requiring mandatory CASA assessment globally?
  2. New applications entering the requirement each year?

I am looking only for aggregate industry-level information, not confidential data about individual applications.

If this aggregate reporting is handled by the OAuth Verification, Trust & Safety, or App Defense Alliance (ADA) team, could someone point me to the appropriate public report or contact?

Thanks!

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