Even with Google's recent decision to delay the retirement of third party cookies in Chrome until 2023, the loss of numerous longstanding ad identifiers still looms large. While brands and advertisers may have more breathing room to figure out alternative solutions, the quest for finding those alternatives demands dedicated and ongoing attention in 2021. Angelina Eng, VP of Addressability and Measurement at the IAB, shares her thoughts on the technical maneuvers that advertisers must take on to navigate a rapidly approaching future with far fewer reliable identifiers.