As users of Office 365, we are using CloudGuard SaaS to protect this cloud application. We knew that to do so, we would need a very good solution. CloudGaurd SaaS prevents malware and zero-day attacks/threats from attacking our SaaS users.
We have 17k+ users and all of them are using Office 365 for email. That's the reason we have implemented the Check Point CloudGuard SaaS solution. We needed protection, and it is working fine as per our requirement.