The web has brought a wide range of free services and capabilities to users such as email, social media, online shopping, streaming video, and many others. These services rely on an economic model that depends on tracking users and identifying audiences for targeted advertising. Today, increasing concerns about user privacy, data breaches, and the misuse of personal information have led to a growing demand for enhanced privacy protections. Such demands have prompted significant changes in how the web operates, including the imminent deprecation of Third-Party Cookies (3PC). With major web browsers phasing out support for third-party cookies, businesses, developers, and marketers face the need to reimagine their strategies. In this talk, I will delve into the details of the Privacy Sandbox initiative and the impending deprecation of third-cookies and explore, and discuss practical strategies for preparing and adapting to this transformative shift.