Yes, load balancing is often necessary in situations of increased workload or traffic volume on a system, such as computer networks, servers, or websites. It is an important mechanism to ensure the performance, reliability, and availability of systems.

Here are some reasons why load balancing is necessary:

1. Optimization of system performance: By distributing the workload evenly across multiple resources, load balancing can help optimize overall system performance. It prevents overloading of certain resources, thereby improving response times and enhancing the overall efficiency of the system.

2. Preventing outages and increased reliability: Load balancing plays a crucial role in preventing outages and increasing system reliability. If a particular resource or server fails, traffic can automatically be redirected to other functioning resources. This ensures the service remains available and reduces the impact of failures.

3. Scalability and capacity management: Load balancing enables easy scalability. It distributes the workload across available resources, allowing the system to better handle growing demand and increasing workload. New resources can be easily added to expand capacity and meet needs.

4. Improved user experience: Through load balancing, users can benefit from faster response times, better performance, and higher availability of systems. This contributes to a positive user experience and satisfaction.

5. Efficient use of resources: Load balancing ensures optimal utilization of available resources. It distributes the workload evenly, preventing overloading of certain resources and making the total system capacity more effectively utilized.

In short, load balancing is essential to improve the performance, reliability, availability, and scalability of systems. It ensures an optimal distribution of the workload and contributes to the efficient and reliable functioning of the system, even during periods of high load or increased traffic.