CDC is the technique of broadcasting a stream of every change in a source database, inserts, updates, deletes, so that downstream systems can react in real time. Instead of every consumer polling the CRM every minute, the CRM emits a 'patient updated' event and the consumers handle it.
For a CX-AI agent, CDC matters when the agent needs to be aware of changes that happen outside its own conversations. The front desk updated the schedule manually, a new patient was added via the web portal, a technician closed out a job in the field. Without CDC, the agent finds out by polling, which is wasteful and stale; with CDC, the agent reacts within seconds.
CDC is increasingly available natively from modern CRMs (Salesforce Change Data Capture, HubSpot webhooks, FHIR subscription resources for healthcare). A vendor that uses CDC where available, and falls back to careful polling where not, is making the integration faster and cheaper to run than one that polls everywhere by default.
Vorel CRM adapters subscribe to CDC streams where the source system supports it. Polling is a fallback path, not the default, which keeps the agent's view fresh without burning rate-limit budget.