CDP:  Collects 1st party data from online and offline sources in real‑time to create a unified customer view, powering highly‑personalized marketing campaigns.
DMP: Segment anonymous 3rd‑party data to power retargeting campaigns.
CRM: Enable customer-facing teams (sales, customer support, etc.) to manage customer relationships.
Further Reading (Knowledge Card): Learn How to Choose & Implement a Customer Data Platform