Organizations Credentials
Here are the Organization Credentials. It is critical to know that you have a wizzard for the Role creation, using the POLP (Principle of Least Privilege) policies templates we have updated you can have the minimun exposure of your resources.
Depending on your Organization it would be a good idea to have a different credential for each of the cloud providers you are using. This way you can have a better control of the resources and the actions that are being done. On the other hand, separating roles for certain group of resources will help you organize and reduce the threats. Every credential could be used for several resources, but one resource has only one usable credential for each plan.