To me, the only way to know that you implemented it correctly is to test it out regularly to see if it really:
brings value to the end users,
doesn't make the staff go crazy
and makes the company sustainable
Outside of that, one of the smart ways to implement a new service is to do it like it's done with software: first, run an alpha version, improve it, run a beta version, and so on.
Recommended resources
For more details about the implementation side, you might be interested in:
Service design and delivery process by the Australian Government Digital Transformation Agency