Single Spa
Single Spa is a JavaScript framework for building micro frontends, enabling multiple independent frontend applications to coexist on the same page. It provides a router that coordinates the lifecycle of these applications, allowing them to be loaded, mounted, and unmounted dynamically. This approach helps teams develop and deploy features independently while maintaining a cohesive user experience.
Developers should use Single Spa when building large-scale web applications where multiple teams need to work on separate frontend modules without tight coupling. It is ideal for scenarios requiring incremental upgrades, such as migrating from a legacy monolith to modern frameworks like React or Vue, or for enterprise applications with complex, modular architectures. It also supports technology diversity, allowing different parts of an app to use different frameworks.