As the growth of data continues, database estates are becoming larger and more complex. Many organizations are now working with multiple database types, both on-premises and in the cloud. This complexity poses challenges in database monitoring, performance optimization, and problem-solving. Our session will present best practices and real-world examples for monitoring in multi-platform environments. We will explore strategies for handling various databases across different platforms, assess the advantages of building vs. buying monitoring tools, consider how to balance in-depth vs. broad monitoring, and provide guidance for proactive risk mitigation.