A new workflow for distribution configuration management.
It is not a secret that the configuration management in Drupal 8 core was made for only one specific use case: move configuration from one environment to another for the same site. Everything else was left for contrib to find solutions for. Config Installer is necessary to set up a site starting from existing configuration and Config Split is needed to have environment specific configuration that go beyond simple configuration overrides, like development modules enabled only locally. But the whole workflow still assumes that developers - most often in the same team - have control over the environments and deployment of the site.
