This functionality will allow you to dynamically change the number of replicas, depending on the number of current connections. Since the available number of simultaneous connections per 1 replica is 10000, this is more than enough for normal use. But when the number of connections increases instantly, for example, during a DDOS attack, the limit of 10000 simultaneous connections is reached, which leads to the fact that all resources become unavailable due to the limit being reached. To solve the problem, you can keep more than 10 replicas at all times, for example, 10, but the cost of LoadBalancer will be increased 10 times, which is not efficient from the financial side.