For a few years before this, I ran a B2B SEO agency called GrowUp. Good clients, real budgets, and the same conversation every quarter: "so which of this content actually led to a closed deal?"
I never had a good answer. GA4 would show me sessions and page views. HubSpot would show me contacts and deals. But nothing connected the two. I could tell a client their blog post got 400 visits, or that a deal closed for £48k. I could not tell them this blog post was one of nine touchpoints that led to that deal.
So I built AttributeIQ to fix that specifically. It connects GA4 and HubSpot at the contact level, so you can pick any closed deal and see the actual path: first touch, every return visit, what page they were on before they booked a call, all the way to closed won.
I like the distinction between knowing something happened and knowing how it mattered.
It's easy to collect metrics around individual events. Understanding how separate interactions eventually contribute to a decision is a very different kind of evidence.