NSX Application Platform (NAPP) and Automation Appliance (NAPPAA) is scheduled to be End of Life.
Refer to the Announcement and documentation to know EOL of NAPP.
NSX Application Platform Feature Deprecation
Announcing NSX Application Platform End of Life
Switch over to Security Services Platform for VMware vDefend. Security Services Platform (SSP) is a high-performance and scalable platform that runs vDefend security services, including Security Intelligence, Network Detection and Response, Malware Prevention, and more. Security Services Platform supports all NSX versions >= 4.2.0.
Refer to the product documentation for more details. Security Services Platform 5.0 Release Notes