Need help with SSO for third party apps

I have a client who wants to implement SSO to several third party applications. I see that some are in the SSO list (Sales Force and Egnyte) but some are not. One of the 3rd party asked for the data below (and I assume the others need this info too.)

Questions

  1. How do I get the info below
  2. How would most of these sites know it is SSO since not all customers on these sites would be SAML (would they have seperate login URL ?)

In order to begin we will need the following from you for your production and development environments:
o SAML Issuer ID
o Vendor IP Addresses (Dev Env Only)
o Security Certificate
o Credentials for vendor platform
o Will you be using SP or IDP SAML?