Specifying which SAML application to log into when going to the xMatters URl

Question 

Is it possible to specify which application to log into from our IDP provider?

For example, when using ADFS we can specify https://adfs.company.com/adfs/ls/idpinitiatedsignon.aspx, which goes to a general sign-in page where we have to choose xMatters in a drop-down. Can we somehow target that to the xMatters application?

Environment

• All versions of xMatters on demand
• SAML-enabled environments
• ADFS

Answer

In your SAML configuration, the SSO URL needs to direct to the specific endpoint.

For ADFS this may resemble the following:

  https://adfs.company.com/adfs/ls/idpinitiatedsignon.aspx?loginToRp=<Relying_Party_Identifier>

(Where <Relying_Party_Identifier> is something the SAML administrator should be able to find in the configuration.)

For more information, check out this handy walk-through:
https://techontip.wordpress.com/2013/01/11/logintorp-auto-select-relaying-party/