The use of public cloud services (SaaS and IaaS/PaaS) has been increasing over the past several years. Subsequently, organizations have migrated more data assets to cloud stores. As organizations find that the amount of cloud-resident sensitive data is increasing, the challenge to sufficiently secure this data, especially when distributed across multiple clouds, becomes greater. In light of the disparate and native controls and policies provided by individual cloud service providers (CSPs), organizations need to craft a comprehensive, defense-in-depth strategy to adequately address the data security challenge.