asp.net - Use existing Single Sign-On solution for Active Directory too -

we have client using sso us, post saml assertions 1 of our .aspx pages, decodes assertion , authenticates user. have been asked second customer user sso well, use active directory federation services.

having read through documentation, can't figure out how use existing solution ad customers too, don't seem send saml assertions, "claims", @ moment i'm not sure difference between , saml assertion is. shed light on this? if need write new aspx page new ad customer, starting points both ends (customer , our application)?

claims saml assertions. adfs returns saml token including assertions (claims) , signature.

if have identity provider , want integrate adfs, either federate adfs identity provider (so adfs allows users select authentication source) or vice versa.