You know, I've been in exactly this situation with manufacturing clients, and it's the kind of slow-burn cycle that makes most dashboards feel useless. The usual vanity metrics just don't cut it when someone's buying decision spans years.
What worked for me was tracking engagement depth - things like how many times someone from a target account revisits your technical specs or downloads a case study over several months. If they're coming back every few weeks, that's not idle curiosity, it's them building an internal business case. I also set up alerts for when multiple people from the same company engage within a short window. That's almost always a sign someone's circulating your content in a meeting.
For ads specifically, view-through rates on retargeting told me more than clicks ever did. If you've got a few hundred to a few thousand prospects and they keep seeing your ads without blocking them over months, you're staying top of mind for that five-year buying window.
One thing that really opened my eyes: during onboarding, I started asking new customers, "What content was most useful during your research phase?" The answers often surprised me, and it helped us focus on what actually tipped the scales.
What's your current setup for tracking this kind of engagement?
