Citrix ADC (formerly NetScaler) is an all-in-one web application delivery controller that makes applications run five times better, reduces web application ownership costs, optimizes the user experience, and makes sure that applications are always available by using advanced L4-7 load balancing and traffic management; proven application acceleration such as HTTP compression and caching; a web application firewall for application security; Single Sign-On; SSL VPN and server offloading to significantly reduce costs and consolidate servers.

As an undisputed leader of service and application delivery, Citrix ADC solutions are deployed in thousands of networks around the globe to optimize, secure and control the delivery of all enterprise and cloud services. Deployed directly in front of web and database servers, Citrix ADC solutions combine high-speed load balancing and content switching, http compression, content caching, SSL acceleration, application flow visibility and a powerful application firewall into an integrated, easy-to-use platform.
Note: Important! Citrix ADC releases 12.0, 11.1, 11.0 have new images, posted as of December 12, 2017, with security fix for CVE-2017-17382. For additional information related to the security fix please see the security bulletin posted at https://support.citrix.com/article/CTX230238. Customers with existing Citrix ADC instances using images released prior to December 12th can upgrade them using upgrade images from citrix.com. The latest images with fix for CVE-2017-17382 are now available on AWS Marketplace can be used for deploying new Citrix ADC instances"