Hugo is highly customizable through its configuration file, typically named hugo.yaml, hugo.toml, or hugo.json.

Here is a basic example of a hugo.yaml configuration:

yaml
baseURL: 'https://example.org/'
languageCode: 'en-us'
title: 'My New Hugo Site'
theme: 'ananke'

You can define site-wide parameters, menus, and build options here.