With traditional cloud hosting, if one node fails it takes about 2 minutes to migrate you to a new server and have everything back up and running. If you can't afford to have that downtime, load balancing provides instant failover between your cloud nodes. If one goes down all traffic is routed to your nodes that are still running. As soon as the down node has been restored the load balancer starts sending traffic there again.
Adding or removing nodes takes just a few clicks. If you need to be able to handle more or less traffic updating takes seconds.
Load balancing is highly recommended (and in some cases necessary) if you have a business that: