Business Connectivity Services (BCS) is a SharePoint feature that enables integration with external data sources. It allows organizations to connect their SharePoint environment with data from various external systems such as databases, web services, and other applications, effectively bridging the gap between SharePoint and these external data sources.

Key Features of BCS

• External Content Types: BCS provides a way to define external content types which represent the shape of the data in external systems. These types are similar to SharePoint lists and libraries but are bound to external data.

• External Lists: Users can create external lists in SharePoint that display data from external systems, allowing for read, and in some cases, write operations.

• Data Operations: With BCS, users can perform CRUD (Create, Read, Update, Delete) operations on external data directly through SharePoint using familiar interfaces.

• Business Data Web Parts: Offers various web parts like the Business Data List Web Part and Business Data Item Web Part to display and interact with external data.

• Secure Store Service: Provides secure credentials storage for accessing external data sources, enhancing security by managing authentication to those sources.

Benefits of BCS

• Centralized Data Access: Simplifies access to external data, allowing users to work with data from different sources in a unified SharePoint environment.

• Enhanced Collaboration: Facilitates collaboration by allowing users to share and work with external data seamlessly.

• Improved Business Processes: Integrates external data into workflows and processes, enhancing efficiency and effectiveness.

Use Cases

• Connecting SharePoint to SQL Server databases.

• Integrating customer relationship management (CRM) systems like Salesforce with SharePoint.

• Accessing data from web services like RESTful APIs.

Business Connectivity Services is a powerful feature within SharePoint that enhances its capability as a platform for enterprise applications by allowing for the integration and manipulation of external data seamlessly.