Apache and Internet Information Services are independently developed platforms that provide a range of the same or similar features. Each server has its own architecture with different functionalities and additional modules, and responds differently to the requirements of particular technologies. Due to the main task of two servers whitch is serving HTTP requests, they are comparable in the context of performance, availability, administration requirements, and other issues related to performing their common roles. When planning a Web server installation, it is important to pay close attention to the hardware, network and security requirements. This paper provides guidelines for the establishment of an adequate infrastructure that will ensure a stable and secure server operation in accordance with good practices. Information about how each server works in combination with different technologies are important when choosing a platform for a particular web site or application. Testing server performance through simulation of different load levels and measuring response time under given conditions gives us information on behavior and level of system availability. The test was conducted in two ways. In the first case, the load on the server is executed simultaneously by sending a large number of requests to the server from the simulated virtual clients, while measuring the time between the request submission and the first and last bytes of the server response. In the second case, testing was performed by changes in the size of the string or the number of requests sent to the server in a single time period. Modifications of test scenarios have provided loads to a system that sometimes exceed the limits of normal operation to detect critical levels when the system becomes inaccessible.