Load balancing, if designed and applied appropriately, enables efficient use of resources and increases reliability. Palladio simulates your software architecture, including your proposal how to load balance, at the design level and predict for example the expectable response time, resource utilisation, throughput, availability, and costs. You can interactively improve your load balancing (e.g. more servers, multiple load balancing levels, combination with cache components) by playing with Palladio models at the design level.