SOURCE OF TRUTH IS
A DECISION.
Your tools will not figure out who owns which data. You have to decide. And if you don't, every single one of them will try to own everything, which means none of them will be reliable.
One source of truth per KPI
This isn't about picking a favorite tool. It's about deciding which system has the most accurate, most complete, most current version of a given data point.
Active customers belong to the product platform. Your product knows who's logged in, who has an active account, who's actually using the software.
MRR and subscription revenue belong to Stripe or your billing system. Your billing system is the closest thing to financial reality.
Pipeline and sales activity belong to the CRM. Deal stages, close dates, rep activity, forecast. That's CRM territory.
Customer health and engagement come from the product, enriched in the CRM. Sync the signals that matter as read-only properties.
Support tickets belong wherever your CS team works. HubSpot, Intercom, Zendesk. Pick one.
When ownership is clear, maintenance follows. When it's not, data decays.
One source of truth per team
Each department should know which system is theirs. The one they're responsible for keeping accurate.
Marketing owns the CRM for lead data: lifecycle stages, lead source, campaign attribution. Sales owns the CRM for pipeline: deal stages, amounts, close dates, notes. Finance owns Stripe or whatever sits closest to actual money. CS owns client health. Product owns usage data and account status.
When ownership is clear, maintenance follows. When it's not, data decays, because everyone assumes someone else is keeping it clean.
What happens when you skip this step
Nobody made the decision early, so every tool became a partial source of truth. Syncs were turned on without a clear direction. Data flowed both ways, or got duplicated, or overwrote something it shouldn't have.
Then someone asks a simple question, "what's our churn rate?", and gets three answers. One from Stripe, one from the CRM, one from a spreadsheet the CFO maintains on the side. The definitions don't match. A paused subscription is churn in one system and not in another.
The problem isn't the tools. The tools are doing exactly what they were told. The problem is that nobody told them the same thing.
The problem isn't the tools. The problem is that nobody told them the same thing.
How to make the decision
Sit down with the people who own each system. Map every key metric your leadership team looks at: active customers, MRR, churn, pipeline, conversion rates, renewal rate, NPS.
For each one, answer three questions. Which system has the most accurate version of this number right now? That's your source of truth. Who is responsible for keeping it accurate? That's your owner. What does this metric actually mean, precisely? Write the definition down.
Do this once, document it, and share it with every team. It takes an afternoon. It prevents months of confusion.
The bottom line
Your tools won't sort this out for you. Stripe doesn't know it's supposed to be the authority on revenue. HubSpot doesn't know it's not. These are decisions that humans have to make, early, clearly, and in writing.
One source of truth per KPI. One owner per system. One shared definition per metric. That's the foundation everything else is built on.
That's where we start at Sequolia, because nothing else works until this does.