The boundary: what stays in your product and your partners' systems
Stated plainly before anything else. HelloGrowthCRM is a commercial system. It holds prospects, accounts, partnerships, conversations, tasks and pipeline stages. It does not verify customers, hold ledgers, process or store transaction data, or maintain records your business or your regulated partners are required to keep. Those live in your own product systems and in the systems of the regulated entities you work with, which remain the systems of record.
What crosses the boundary is a usage signal and an account identifier, through an API, so your sales team knows which accounts are worth a conversation. Nothing about your product architecture or your partners' processes changes because you started managing follow-up properly.