Software Development Kits (SDKs) play a crucial role in product expansion by enabling seamless integration with different platforms, thereby adding value and opening new revenue channels for businesses. They comprise tools, libraries, documentation, and sample code, which simplify the complexities of interacting with application programming interfaces (APIs) and reduce development time. SDKs are particularly useful in mobile/web app development, cloud services integration, payment processing, and game development, offering pre-built components and advanced APIs that focus on high-value tasks rather than low-level implementation details. Product managers must understand SDK features, compatibility, integration complexities, and licensing to make informed decisions about SDK platform integrations, which can streamline development processes and shorten delivery timelines. Proper research, understanding product requirements, cost analysis, and assessing SDK performance and security are essential for successful implementation, ultimately enhancing product functionality and accelerating time-to-market.