The "least connections" method is a load balancing technique used in computer networks. It directs incoming traffic to the server with the fewest active connections. This helps ensure that no single server becomes overwhelmed, improving overall performance and reliability. This approach is particularly useful in environments with varying workloads, as it allows for more efficient resource utilization. By distributing requests based on current connections, it can enhance user experience and reduce response times, making it a popular choice for managing traffic in systems like web servers and application servers.