About Load Balancer an AWS Service

Load balancer is a service used to route the incoming traffic across all servers equally that are capable of fulfilling those requests in a manner that maximizes speed and capacity utilization. The load balancer ensures that no one server is overloded with the traffic.

Types of load balancers? And difference between them.

Application Load Balancer (ALB): Layer 7

ALB supports HTTP, HTTPS and Web socket traffic.
Allows load balancing to multiple HTTP applications across different machines and same machines (EC2).
The application servers don't see the client's ip directly.

Network Load balancer (NLB): Layer 4

It works at transport layer.
It forwards TCP/UDP traffic to instances.
Handles millions of requests per second.
It has one static IP per AZ.

When clients send requests over the internet, the traffic is directed to a load balancer, which then distributes it across multiple servers to achieve load balancing.

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Written by

Pooja Bhavani

Hi, I am Pooja Bhavani, an enthusiastic DevOps Engineer with a focus on deploying production-ready applications, infrastructure automation, cloud-native technologies. With hands-on experience across DevOps Tools and AWS Cloud, I thrive on making infrastructure scalable, secure, and efficient. My journey into DevOps has been fueled by curiosity and a passion for solving real-world challenges through automation, cloud architecture, and seamless deployments. I enjoy working on projects that push boundaries whether it's building resilient systems, optimizing CI/CD pipelines, or exploring emerging technologies like Amazon Q and GenAI. I'm currently diving deeper into platform engineering and GitOps workflows, and I often share practical tutorials, insights, and use cases from my projects and experiences. ✨ Let’s connect, collaborate, and grow together in this ever-evolving DevOps world. Open to opportunities, ideas, and conversations that drive impactful tech!