# Explanation This section provides additional context and deeper understanding of specific topics and concepts relevant to the NGINX ingress integrator charm. * [Security overview](https://canonical.com/juju/docs/nginx-ingress-integrator-charm/latest/explanation/security/index.html.md) * [What is ingress?](https://canonical.com/juju/docs/nginx-ingress-integrator-charm/latest/explanation/what-is-ingress/index.html.md)