Absolutely. Here is the Production URL for My Sis ID web app: https://my.sis-id.com/ for all Sis ID customers.
For instance, a link to a control result page from a third party software can be built by concatenation of the control page URL with the control ID available from the API Controls response at the end of the URL: https://my.sis-id.com/#/control/result/control ID.