A Software Load Balancer is a tool that helps distribute incoming network traffic across multiple servers. This ensures that no single server becomes overwhelmed, improving the overall performance and reliability of applications. By balancing the load, it enhances user experience and minimizes downtime. These load balancers can operate on various protocols and are often deployed in cloud environments. They can also provide features like health checks, which monitor server performance, and automatic scaling, which adjusts resources based on demand. This flexibility makes Software Load Balancers essential for modern web applications and services.