Starting a new Drupal 8 project with the LakeDrops composer template only takes less than 3 minutes.
Composer
Composer is a dependency manager for PHP, the programming language Drupal is written in. It allows to automatically install and update third-party packages and libraries that are used in an application together with their dependencies. Composer can also be used to update Drupal core and contributed modules. Reusing third-party code from other developers reduces costs and provides access to mature solutions that have been tested and improved by many programmers.
As a team that had spend time and money for years in developing best practices for staging,
Drupal 8 projects are in most cases controlled by Composer and following best practices, the directory structure of a Drupal project looks similar to this (more details have already been covered