Description: An internal load balancer is an essential component in network architecture that distributes network traffic among multiple instances within a Virtual Private Cloud (VPC), without exposing these instances to the Internet. Its primary function is to optimize resource usage, improve availability, and ensure the scalability of applications. By efficiently routing traffic, it allows applications to handle a higher volume of requests without compromising performance. This type of load balancer is particularly useful in environments where security is a priority, as it keeps instances behind a firewall, protecting them from unauthorized access. Additionally, it facilitates the management of internal traffic, allowing applications to communicate with each other smoothly and efficiently. Key features of an internal load balancer include the ability to perform health checks on instances, the possibility of configuring custom routing rules, and integration with other cloud services, making it a versatile tool for modern cloud architectures.
