What's a recommended way to broaden your advertising strategy in a privacy-safe way?

Advertising to users similar to your current high-LTV (Lifetime Value) customers is a privacy-safe way to broaden your strategy because it leverages lookalike modeling. This method uses aggregated, anonymized data to find new audiences with similar characteristics to your most valuable existing customers, without directly targeting individuals based on sensitive personal information. This approach respects user privacy while still allowing for effective audience expansion. Manually created segments might lack the data-driven precision and scalability of lookalike audiences. Targeting users "in market" for competitors' products can be effective but doesn't inherently broaden your strategy in a privacy-safe way without careful implementation. Randomly targeting users on Display and YouTube is inefficient and unlikely to be privacy-safe or effective.