Does your company rely on its websites for sales and customer support? At some point all businesses learn that their web presence is critical to continued sales and support, and losing that presence (through web server failure) can be financially painful. Add to this the fact that many companies experience growth and an increased demand for their web services. More and more customers regularly use company websites, increasing the load on them and slowing them down. You can fix these problems by adding additional web servers to a load balance. A load balance, known as a web farm in IIS, is a process of adding high availability to help prevent the failures of your websites and increase overall performance.
The concept of a load balance is simple: you place copies of your websites on other web servers so that if one server fails, another server will pick up the load. It’s similar to having an online backup ready to take over the work if something goes wrong.