Risk and exposure review
What is publicly reachable, what would hurt most if it went down, and which endpoints are expensive enough to be worth attacking.
Product selection
Matching a partner mitigation product to your exposure, your architecture and your budget. An always-on scrubbing service and an on-demand one are different commercial and operational commitments, and the right choice depends on how often you expect trouble.
Implementation
Routing or DNS changes, protected-endpoint configuration, origin hardening so your real IP addresses are not trivially discoverable, and rate limiting on the endpoints that need it.
Tuning
Layer 7 rules tuned against your actual traffic, so legitimate users are not caught in the filter. This takes iteration, and it is work, not a switch.
Rehearsal and runbook
A written procedure for what happens during an attack — who is notified, who has authority to change rules, what the escalation path into the partner looks like. Agreed while everyone is calm.
Monitoring and response
Ongoing monitoring, with response inside the agreed scope when something starts.
Post-incident reporting
A written summary after any significant event: what happened, what was mitigated, what should change.