The 3 A’s of Good Metrics
Establish baseline metrics by building the minimum viable product — the minimum required to measure the response of early adopters. Then, in each development cycle, use the insights gained by studying customers to make improvements. This is the source of validated learning — proof that the customer insights translate into tangible metrics improvements.
via blogs.hbr.org
As pointed out by the author, good metrics must be: Actionable, Accessible and Auditable. Make sure your employees understand the metrics and that they are readily available to them. Also, your great results must be replicable and you should know how your method(s) became successful.