Data ingestion refers to the process of importing raw customer data into a CRM system from multiple sources such as websites, social media, call centers, and third-party databases. This data can be structured (e.g., customer profiles) or unstructured (e.g., chat logs, emails). Businesses use ETL (Extract, Transform, Load) processes, APIs, and cloud integrations to automate data ingestion and maintain data integrity. For instance, when a customer fills out a form on a website, CRM ingestion tools automatically capture and categorize the information. Proper data ingestion strategies enable businesses to build complete customer profiles, improve segmentation, and drive more effective marketing and sales initiatives.