There are lots of articles and blog posts on SaaS metrics for the typical monthly subscription type SaaS companies, but many of the metrics offered don't translate well to the enterprise/annual contract SaaS world. What metrics work well for businesses that deal with longer lead times, lower churn, and annual recurring revenue?
Check out this example for your business metrics. I think you can easily convert MRR to ARR.
I think the funnel metrics like traffic, leads, MQL, SQL, time to close, etc, is important, but for the business side, I think it's more about spend and revenue.
Good luck and holler with questions.