Service for distributing traffic among EC2 Instances

What is service that relates the concept of Distributing traffic to multiple EC2 Instance? The service that relates to distributing traffic to multiple EC2 instances is called Elastic Load Balancing (ELB). Elastic Load Balancing automatically distributes incoming application traffic across multiple EC2 instances to ensure no single instance is overwhelmed with too much load. It enhances the availability and fault tolerance of your applications.

By distributing traffic across multiple EC2 instances, Elastic Load Balancing improves the availability, fault tolerance, and scalability of your applications. It ensures that your resources are used efficiently and that your application can handle varying levels of traffic.  There are several key features and benefits of using Elastic Load Balancing:

• High Availability: ELB increases the availability of your applications by continuously monitoring the health of EC2 instances. If an instance becomes unhealthy or fails, ELB automatically reroutes traffic to healthy instances, minimizing downtime and ensuring a seamless user experience.
• Fault Tolerance: By distributing traffic across multiple instances, ELB improves fault tolerance. Even if one instance fails or experiences issues, the remaining instances continue to handle incoming requests, reducing the impact of failures on your application.
• Scalability: ELB supports auto-scaling, allowing your application to dynamically adjust its capacity based on traffic demands. As traffic increases, ELB can automatically add more instances to handle the load, and when traffic decreases, it can remove unnecessary instances to optimize costs.
• Efficient Resource Utilization: ELB optimizes resource utilization by evenly distributing traffic among instances. This ensures that each instance operates at an optimal level, maximizing performance and reducing the risk of performance bottlenecks.
• SSL Termination: ELB supports SSL termination, allowing it to decrypt HTTPS traffic before forwarding requests to instances. This offloads the SSL decryption process from instances, improving overall performance and reducing compute overhead.
• Health Checks: ELB performs regular health checks on instances to ensure they are operating correctly and can handle incoming traffic. If an instance fails a health check, ELB automatically removes it from the load balancer pool until it becomes healthy again.

In addition to these features, ELB offers different types of load balancers to cater to various application needs:

• Application Load Balancer (ALB): Ideal for balancing HTTP/HTTPS traffic at the application layer. ALB supports content-based routing, allowing you to route requests based on URL paths or hostnames.
• Network Load Balancer (NLB): Designed for handling TCP traffic at the transport layer. NLB is highly scalable and offers ultra-low latency, making it suitable for latency-sensitive applications.
• Classic Load Balancer (CLB): The original load balancer offered by AWS, suitable for applications that require basic load balancing functionality without advanced features.

In conclusion, Elastic Load Balancing (ELB) is a critical component for distributing traffic among EC2 instances in AWS. Its features such as high availability, fault tolerance, scalability, efficient resource utilization, SSL termination, and health checks make it an essential tool for maintaining the performance and reliability of cloud-based applications.