Google’s AI Max for Search goes universal (April 2026) — immediate actions for search advertisers

In early April 2026 Google moved AI Max features for Search out of beta and made text-guideline controls and AI-driven copy generation available broadly. This changes how Search campaigns generate ad copy, find queries beyond keywords, and interact with AI Mode placements — here’s a concise playbook of the technical and tactical updates agencies and in-house SEM teams must make this week.