What is lumen?
Lumen is a newly introduced micro PHP framework which is a faster, smaller and leaner version of a full web application framework. It is introduced by Taylor Otwell, the creator of Laravel. It uses the same components as Laravel, but especially for microservices.
It has a simple installer like Laravel. You have to use this command to install lumen.
composer global require "laravel/lumen-installer=~1.0"