In a method for transferring session data from a first application accessible via at least one DNS name in a first DNS domain to a second application accessible via at least one DNS name in a second DNS domain, a computer receives via the first application a first HTTP request from an HTTP client, and in response, the computer establishes a first session with the HTTP client. The computer receives, from the HTTP client, a second HTTP request comprising an identifier of the second application, and in response, the computer stores in a memory a data structure identifiable by a data structure identifier and containing data pertaining to the first session. Responsive to storing the data structure, the computer transmits, to the HTTP client, an HTTP response comprising the data structure identifier, a redirection status code, and a URI comprising a DNS name in the second DNS domain.