Configuring load balancers for web application hosting requires an understanding of the type, tool, and environment you are using, but there are some general steps and principles that apply to most scenarios. First, you must define the backend servers or instances that will serve the web application, assigning them unique identifiers, IP addresses, and ports. Then, you must define the load balancer itself, including the IP address, port, protocol, and security settings. Additionally, you must specify a load balancing algorithm or strategy to determine how requests are distributed among the backend servers or instances. Popular algorithms include round-robin, least connections, least response time, or hash-based. Furthermore, health checks or probes should be set up to monitor the status and performance of the backend servers or instances and remove them from the pool if they fail or become overloaded. Lastly, rules or policies should be established to filter or modify requests or responses based on certain criteria such as headers, cookies, or paths. After configuring the load balancer, it is important to test and validate its functionality and adjust it as needed.