The reverse proxy and load balancer in front of production traffic
Nginx is a web server and reverse proxy widely used to handle incoming traffic before it reaches an application terminating TLS, load-balancing requests across multiple service instances, serving static assets, and shielding the application layer from being directly exposed to the internet.
The edge of a system is where a lot of resilience decisions actually live: how traffic gets distributed, how a failed instance gets routed around, how TLS gets terminated correctly. Getting this layer wrong turns an application-level fix into an infrastructure-level outage.
Nginx sits at the edge of the architectures we build the load balancer layer in our cloud infrastructure reference architecture, distributing traffic across horizontally-scaled service instances instead of a single point of failure.