What is Netscaler exactly?

The flexible all-in-one platform for application delivery and security! Protect your applications from cyber security threats and deliver an optimized user-experience around the globe!

Firmly on-prem. All-in on cloud. Good with hybrid.
Whichever you choose, NetScaler works the same across them all.

For more info, check NetScaler: Application Delivery at Scale or watch below movie.