Three tech giants are rushing in to disrupt the cybersecurity market the same way they disrupted retail, computing, and advertising. When computing was on-premises or in client-owned data centers, a point-product approach to security made sense (even if it didn't work all the time). However, Alphabet, Amazon, and Microsoft are now looking to circumvent existing security product vendors by delivering security capabilities to where client workloads are moving: the cloud. This report helps S&R pros prepare to work with these new security giants.