What is multicasting in Angular?

When utilizing the HttpClient module in Angular to interact with a backend service and get data, we may broadcast the data to numerous subscribers in a single execution. Multicasting is the process of replying with material to many subscribers. It’s especially helpful when various portions of our apps are waiting for data. We’ll need an RxJS subject to use multicasting. Multiple subscribers are not allowed since observables are unicast. Subjects, on the other hand, allow for many subscribers and are multicast.