Improved Security
Many SASE providers will enable Zero Trust, granting access based on the Identity of the user, the device and the application simplifying policy management. Other services include end to end encryption of the entire session to protect when the user connects in an untrusted environment, content inspection to identify sensitive data and apply appropriate policies, malware and threat detection/prevention, WAF/WAAP and DNS protection.
Improved Effectiveness of Security and Network staff
This is a common upside anyway to deploying cloud services as staff’s time isn’t taken up performing routing tasks such as upgrading and patching however by consolidating more to SASE will also mean there are less vendors to manage and a more common interface across what were traditionally multiple different systems.