We will use these terms extensively in our tutorials and upcoming guides. Therefore, it is necessary to understand the key differences between a registry and a repository.
The simplest difference is:
A registry stores a collection of repositories.
A repository contains images with different tags.
So, the Docker Hub is a registry where you will create a repository to store the images.
You can even host a registry by yourself. Also, it could be hosted by a third-party registry provider like:
It’s your choice to host images wherever you want. There would be a difference between the repository and tags but you can pull the images with the same command.