> For the complete documentation index, see [llms.txt](https://docs.greennode.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greennode.ai/load-balancer/application-load-balancer/how-it-works-alb.md).

# How it works (ALB)

ALB acts as a traffic director, intelligently distributing incoming requests across multiple backend servers to ensure optimal performance, availability, and security for your applications. Here's how it works:

<figure><img src="/files/8gMrJ1vgINXMq1YduobY" alt=""><figcaption></figcaption></figure>