This document provides a whirlwind tour of big data, security, and cloud computing. It begins by looking back at where technology has been, from mainframes to client-server models to virtualization. It then examines the present state of early decentralization and a focus on cost-cutting and flexibility. Looking ahead, it discusses the future of commodity-based computing and storage and the need to revise governance. The document emphasizes that security is not one-size-fits-all and should be tied to risk tolerance policies. It stresses the importance of standards, privacy, and continual adaptation to vulnerabilities. In the end, it summarizes that cloud, big data, and security require balancing tolerance to risk with strong governance and adaptability