What is the primary purpose of Sitecore's JSS (JavaScript Services)?

The primary purpose of Sitecore's JSS (JavaScript Services) is to build modern web applications using JavaScript frameworks. JSS allows developers to leverage the power of client-side frameworks such as React, Angular, or Vue.js while integrating seamlessly with the Sitecore platform. This approach enables the creation of rich, interactive user experiences that can be delivered through a decoupled architecture.

Using JSS, developers can utilize Sitecore's content management capabilities while harnessing the flexibility and efficiency of JavaScript frameworks for frontend development. This leads to enhanced performance, and improved user experiences, and allows for rapid iterative development, making it an ideal solution for contemporary web applications.

In contrast, building traditional server-side applications would not align with the intended use of JSS since it focuses on client-side rendering. Management of database transactions is more suited to backend services, and designing static websites does not utilize the dynamic features that JSS offers. Therefore, the emphasis on modern web applications distinguishes JSS as a tool tailored for the current landscape of frontend development.