As a Google PM launching a product for a digital library, my first step would be to identify the target users, focusing on their needs, behaviors, and challenges. Our main audience would likely include students, educators, researchers, and book lovers. Next, I would collaborate with the Engineering team to develop a product that is functional, user-friendly, and dependable, effectively meeting user needs. Simultaneously, I would engage the marketing team to kick off an awareness campaign and generate excitement, highlighting our unique features such as a wide selection of books, easy accessibility, and an intuitive interface. From a technological standpoint, it would be essential to ensure seamless access across multiple devices and provide excellent search functionality, given that this is a digital library. Upon the product's launch, I would host online webinars, organize author meet-and-greet events, offer a limited-time free access period, or provide subscriptions for book clubs to foster user engagement. After the launch, I would actively monitor user reviews and feedback, track engagement metrics, and assess subscriber growth. Regular updates and feature improvements based on user input would be vital for keeping the product current and appealing.