Used to implement virtual queuing for cloud-based online electronic business platforms, including online sales platforms, online ticketing platforms, online booking platforms, etc. It is used when the main business system's "physical server" or "virtual server" cannot handle a large number of visitors or incoming requests due to high concurrency. It redirects visitors or entrants to a waiting interface (GUI) on the client side, displaying the current number of people waiting in the queue and the expected wait time in an orderly queue, allowing them to proceed to the main business system for business operations.