What concept does NGINX utilize for server configuration?

NGINX utilizes the concept of a server block for its server configuration. A server block is a specific configuration container that defines how to handle requests for a particular domain or IP address. Each server block can have its own directives, which can include settings for listening ports, server names, locations, SSL certificates, and more.

This setup allows for a flexible and powerful way to manage multiple websites or applications hosted on the same NGINX instance, each with its own configuration. By using server blocks, administrators can easily route traffic, set different rules or policies, and configure individual settings for each application, providing a clear and organized structure for managing virtual hosts, unlike the more general concept of virtual hosts which may not encompass the full range of capability and specificity that a server block provides.

Choosing server blocks as the primary means for server configuration reflects the versatility and capability of NGINX in handling web traffic efficiently and effectively.