An AWS Application Load Balancer (ALB) takes that decision millions of times a day, pushing traffic exactly where it needs to go. It works at Layer 7, speaking HTTP and HTTPS, routing requests based on paths, domains, headers, and rules you control. The moment you wire it in, your architecture gains resilience, scale, and control.
AWS Access Load Balancer is more than a switch for web traffic. It’s an entry point, a checkpoint, and a filter. With fine‑grained routing, SSL termination, WebSocket support, and deep integration into VPC security groups, you can shape how clients interact with your backend without touching your application code. ALB makes zero-downtime deployments and blue‑green testing not just possible, but routine.
Access policies let you control traffic before it reaches your services. Use AWS Identity and Access Management (IAM) to grant or deny API calls. Combine this with Security Groups and Network ACLs, and you get granular, rules‑based access to your load balancer endpoints. When you attach a Web Application Firewall (AWS WAF), malicious IPs and suspicious patterns are blocked on the edge, saving your compute and your budget.
Health checks run constantly, removing failed instances from rotation within seconds. Auto Scaling Groups bind perfectly with ALB. New instances come online and join the load balancer automatically. Old ones drain connections before termination. Your clients never see the movement. They only see uptime.