If you do not have an XSEDE or ACCESS account, you will need to create one to log in to PRESTO.
What is an identity? CILogon supports InCommon, eduGAIN, Google, GitHub, ORCiD, and Microsoft identity providers. Visit https://cilogon.org/ to view the full list of identity providers that CILogon supports.
This allows you to use an existing third-party account, eg. ORCiD, GitHub, Google, academic institution, and many other identity providers, to create a new ACCESS account.
You will then be automatically redirected to the selected identity provider, where you can approve CILogon as an application.
This allows you to create a direct ACCESS account that is not associated with another identity provider.
After you have created an ACCESS account, you can log in to PRESTO using the steps outlined on PRESTO Existing User CILogon authentication.