Marketing rules changed a lot in 2026. Google now limits ad reach for advertisers with weak brand trust, starting with Search in June 2026. Meta requires AI-content labels on all ads and missing one is now a top reason ads get rejected. The EU AI Act requires labels on realistic AI-made content. The US now has 20 states with privacy laws. Singapore's PDPC is issuing real fines. Read on for the full picture or jump to the FAQ for quick answers