CMI in Drupal 8 - Exporting and Importing of all the Drupal 8 site's configuration is made easy
Configuration Management Initiative (CMI) in drupal seperates “content” from "configurations". It uses yml files to store the configuration datas And it provides way for deploying configurations over the sites which includes development, staging and production.
CMI provides “Full Archive” and “Single Item” export and import of the configurations. "Full Archive" will generate a .tar file where that can be imported into the other one. "Single Item" will generate the code for a specific item. For Example - fields, field storage.
Inorder to import "configuration" between sites their UUID mush be identical. If you don't have a clonned instance you can change the UUID of the drupal instance.