The document discusses Common Data Service for Apps (CDS for Apps) which provides a system of record for transactional business data. CDS for Apps allows organizations to build customized apps like Canvas apps and Model-driven apps that are connected to centralized data, rules, and logic. It also includes application templates for common business functions like CRM, marketing, sales, and more. CDS for Apps provides a standardized way to develop business applications that connect to Microsoft Dynamics 365 and Power Apps.