What Is An Application Delivery Controller (ADC)?

ADCs are advanced load balancers with functions and features that enhance the performance of applications. Today, companies of all sizes with geographical dispersal of people and different data constructs require ADCs to optimize their complex application environments from web applications, to Exchange, SharePoint and databases. It is interesting that before the term ADC was used more recently (in the last decade), companies relied on load balancers for website availability and scalability. In this paper we will describe the fundamentals of a load balancing system and its evolution to an ADC.

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