Tell about what you have translated from synchronous to asynchronous mode and why it was done.

Converting from synchronous to asynchronous mode is usually associated with the need to improve the application's performance and responsiveness.

For example, in a Java application that handles network requests or interacts with a database, the synchronous mode blocks the thread until the operation is complete, which limits scalability.

The asynchronous approach allows not to block threads but to process results as they become ready, which improves resource utilization and reduces delays.

Example: converting a REST API from synchronous calls to using CompletableFuture or reactive libraries (such as Reactor or RxJava) to handle requests in parallel and avoid blocking server threads.