Many of us had to duck when an F1 or F2 tornado crossed the area, flattening most things in their path, but what about an F5? The most powerful tornado speed on the Fujita scale also inspired the name of F5 Labs, which began in 1996 and is now known as f5 certification Originally offering its BIG-IP server load balancing products, F5 was developed to provide an optimization technology called Application Delivery Networking (ADN). DNA maintains servers, network resources and similar assets in data centers and in the cloud around the world.