Please let me know how can i run both OpenVidu and website from same AWS Instance. Also can i use AWS free tier for OpenVidu.
AWS free tier will not be enough to use OpenVidu. I recommend for testing/development purposes a t2.large or t2.xlarge.
You can use our Cloudformation templates wich will deploy automatically all the resources you need for OpenVidu and you can choose what type of instance you want to use for the deployment: https://docs.openvidu.io/en/2.15.0/deployment/deploying-aws/
I suppose that your “website” is an application that consumes OpenVidu Api, right? After deploying OpenVidu with Cloudformation you can deploy your app following these instructions: https://docs.openvidu.io/en/2.15.0/deployment/deploying-openvidu-apps/#with-the-same-port-and-certificate-as-openvidu
Regards,
Carlos