Push goes deeper into identities on cloud apps to prevent identity-based attacks
CASBs work at the network layer. They can show you the websites your employees are accessing, and from that, they infer cloud app usage — along with some false positives.
CASBs are most useful to organizations in highly regulated industries that want to lock down their environment and block employees from accessing cloud apps or websites while they’re on the corporate network or using corporate endpoints. However, they are expensive, complex to implement and take a lot of resources to manage.
Push works at an identity and application level. Push discovers all the apps your employees are using, and gives you visibility of the identities they use to access these apps. You can see how securely your employees are using each app and harden identities that are vulnerable to identity-based attacks — the #1 threat. This isn’t possible with a CASB.