What Are The Different Types Of Load Balancers In Ec2?

Amazon Elastic Compute Cloud (EC2) offers several types of load balancers to distribute incoming traffic across multiple instances. These load balancers cater to various use cases and traffic management requirements. As of my last knowledge update in September 2021, here are the main types of load balancers available in EC2:

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1. Application Load Balancer (ALB):

   • Layer: Operates at Layer 7 (Application layer) of the OSI model.
   • Use Case: Ideal for routing HTTP/HTTPS traffic. It can route requests based on content, such as URL, host, or path, making it suitable for applications like web servers, microservices, and container-based applications.

2. Network Load Balancer (NLB):

   • Layer: Operates at Layer 4 (Transport layer) of the OSI model.
   • Use Case: Designed for handling TCP/UDP traffic. It's used when you need high performance, low latency, and extreme reliability, such as for gaming applications, IoT, and financial applications.

3. Classic Load Balancer:

   • Layer: Provides both Layer 4 and Layer 7 load balancing.
   • Use Case: Older and less feature-rich compared to ALB and NLB. It can be used when migrating from an older AWS environment, but it's recommended to use ALB or NLB for new applications.
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Each of these load balancers has different capabilities and features. The choice of which one to use depends on the specific requirements of your application. Please note that AWS services and features may have evolved since my last update, so it's a good practice to check the AWS documentation or the AWS Management Console for the latest information.