RA's Browser->AA's Cloud Card: Open AA's Cloud Card URL AA's Cloud Card->RA's Browser: Display Cloud Card with XDI Connect Button RA's Browser->RA's Browser: Click on XDI Connect Button RA's Browser->XDI Connect Service: Form POST Connection Invitation XDI Connect Service->RA's Browser: Ask for Cloud Name RA's Browser->XDI Connect Service: Enter Cloud Name XDI Connect Service->Discovery Service: Discover RA's Auth Service Discovery Service->XDI Connect Service: Discovery Result XDI Connect Service->RA's Browser: Redirect to RA's Auth Service RA's Browser->RA's Auth Service: Form POST Connection Invitation RA's Auth Service->RA's Browser: Ask for Authentication RA's Browser->RA's Auth Service: Authenticate RA's Auth Service->RA's XDI Cloud: Connection Invitation RA's XDI Cloud->RA's XDI Cloud: Enforce Community Link Contract RA's XDI Cloud->Discovery Service: Discover TA's XDI Cloud Discovery Service->RA's XDI Cloud: Discovery Result RA's XDI Cloud->TA's XDI Cloud: Retrieve Link Contract Template TA's XDI Cloud->RA's XDI Cloud: Link Contract Template RA's XDI Cloud->RA's Auth Service: Link Contract Template RA's Auth Service->RA's Browser: Ask for Approval RA's Browser->RA's Auth Service: Approve RA's Auth Service->RA's XDI Cloud: Confirm Approval RA's XDI Cloud->Discovery Service: Discover AA's XDI Cloud Discovery Service->RA's XDI Cloud: Discovery Result RA's XDI Cloud->RA's XDI Cloud: Build Connection Request RA's XDI Cloud->AA's XDI Cloud: Connection Request AA's XDI Cloud->AA's XDI Cloud: Enforce Community Link Contract AA's XDI Cloud->Discovery Service: Discover TA's XDI Cloud Discovery Service->AA's XDI Cloud: Discovery Result AA's XDI Cloud->TA's XDI Cloud: Retrieve Link Contract Template TA's XDI Cloud->AA's XDI Cloud: Link Contract Template AA's XDI Cloud->AA's XDI Cloud: Instantiate Link Contract AA's XDI Cloud->RA's XDI Cloud: Connection Result RA's XDI Cloud->RA's Auth Service: Connection Result RA's Auth Service->RA's Browser: Redirect to AA's Cloud Card RA's Browser->AA's Cloud Card: Form POST Connection Result