Hello @prashantgupta,
Single Sign On is a really broad topic, indeed. To start with it, the background provided by @jklaverstijn is very nice.
To summarise a little bit, and to try to pin point you to some posterior technical details, what you are looking for is Single Sign On on a Web Application (SAS VA is). And there are several types, depending on your requirements. The most popular options would be:
- Simple web authentication against a static file.
http://documentation.sas.com/?docsetId=bisecag&docsetTarget=n13hplgie618g8n11o5q04cmhkgw.htm&docsetV...
http://documentation.sas.com/?docsetId=bimtag&docsetTarget=n1bhp608f0hsoen10i1vi0p9l5f7.htm&docsetVe...
- IWA Authentication (against your AD using Kerberos)
http://documentation.sas.com/?docsetId=bimtag&docsetTarget=p1871e69gmwdr0n1o182krslc10p.htm&docsetVe...
- 2 Factor Authentication with SAML 2.0
https://support.sas.com/resources/papers/proceedings15/SAS1385-2015.pdf
And there are more, that you can see at:
http://documentation.sas.com/?docsetId=bimtag&docsetTarget=p05l4ttthwfpnkn12zd6wshy3wp7.htm&docsetVe...
All of them will require to implement Web Authentication (the steps for first option).
I would recommend you to put in direct contact your SAS Security team and your SAS installer/administrator and go carefully through the requirements and steps.
Kind regards,
Juan