What is a DDoS-protected server and how do you size it?

A DDoS-protected server is a normal server with traffic scrubbing in front of it. When an attack hits, malicious traffic is identified and filtered upstream while real traffic still reaches the server.

When sizing protection consider three things: the largest attack you have seen, typical attack sizes in your industry (gaming is usually high) and the cost of downtime. Start with a base tier and enable elastic protection as needed.