Webhooks and APIs are both methods of enabling data communication between CRM systems and third-party applications, but they function differently. Webhooks are event-driven and automatically send real-time updates when specific triggers occur, such as a new lead entering the CRM. APIs, on the other hand, require manual or scheduled requests to retrieve or send data. Businesses use webhooks for instant data synchronization, such as CRM-to-email marketing updates, while APIs allow for more complex, structured data exchanges. Choosing between webhooks and APIs depends on the integration requirements and workflow automation needs.