Citrix® NetScaler® is a web application delivery solution that makes applications five times better by accelerating performance, ensuring that applications are always available and protected, and substantially lowering costs. NetScaler products are easily selected by determining the edition providing functional needs and the appropriate physical or virtual appliance platform to fulfill performance needs. Ref: https://www.cdw.com/product/citrix-netscaler-mpx-5500-standard-edition-4x10-100-1000-product-upgrad/2832716