Client-Side Web Parts (CSWP) are a modern approach to creating and deploying web parts in SharePoint Online and SharePoint Framework (SPFx). These web parts leverage client-side technologies and provide a more responsive user experience compared to traditional server-side web parts.

Key Features

• Performance: CSWP are designed to load faster and provide a seamless user experience.

• Framework Agnostic: They can utilize various JavaScript frameworks like React, Angular, or Vue, allowing developers to choose their preferred tools.

• Reusable Components: CSWP can be packaged as reusable components, enabling easier sharing and consistency across sites.

• Integration with Microsoft 365: They can easily integrate with Microsoft 365 services, such as Microsoft Graph, allowing for rich data interactions.

Development Process

• 1. Setup: Use the SharePoint Framework (SPFx) to set up a development environment.

• 2. Build: Create the web part using tools like Yeoman, and choose a framework to build the user interface.

• 3. Deploy: Package the web part and deploy it to the SharePoint App Catalog.

• 4. Customize: Allow site owners to add and configure the web part on their pages.

Benefits

• Modern User Interface: Offers a responsive and attractive user interface.

• Improved Developer Experience: Use modern development tools and languages that developers are familiar with.

• Enhanced Customization: Provides flexibility in customization and functionality.

Client-Side Web Parts represent the future of web part development in SharePoint, aligning with modern web development practices and providing a robust platform for building rich, interactive, and engaging SharePoint applications.