Karthik Karthikchari
In a very crude basic setup (as we do not know much about the infrastructure).
/URL1 ---> Protected via PolicyDomain1 / Realm --> Realm is linked to AuthScheme Basic.
/URL2 ---> Protected via PolicyDomain2 / Realm --> Realm is linked to AuthScheme IWA.
/URL3 ---> Protected via PolicyDomain3 / Realm --> Realm is linked to AuthScheme HTML Forms.
PolicyDomain1 is linked to ODS.
PolicyDomain2 and PolicyDomain3 is linked to AD.
NOTE : In the above usecase all URLs are different. Hence it is easy to segregate the protection mechanisms. If your usecase is different, kindly break the usecase giving some example like above. If you wish to use the same URL for IWA and Forms, there is not a solution OOB [You'll need customization].
Regards
Hubert