

5 Reasons Every Business needs to Build an ICP First
Posted September 2, 2025 by Sue Foley
“Don’t count the people you reach; reach the people who count.”
— David Ogilvy
In the rush to build and launch many founders skip the most foundational step: building an ICP (your Ideal Customer Profile). It seems obvious, almost too simple. But ignoring it means misalignment that can become impossible to unwind from.
Working with companies navigating product-market fit, and helping them plan their GTM strategies has shown me a clear pattern. Teams that anchor to their ICP make better decisions, which helps them grow faster. Those that don’t spin in circles, waste money and misdirect teams by continually “flip-flopping.”
I understand why this happens. Fear plays a big part in determining exactly who you’re going after. It feels limiting. Your narrowing your audience. But, here’s why understanding your ICP isn’t optional, and how it informs everything else.
1. Product should solve a problem for someone specific, with specific “jobs to be done”
Too many products are built for “everyone,” which usually means they resonate with no one. When your ICP isn’t clearly defined, the temptation is to chase feature requests from anyone willing to talk. That leads to bloat and a scattered roadmap. It also leads to a bunch of features that 80% of your clients aren’t even using.
When you know exactly who you’re building for, and more importantly, who it is NOT for, your team can prioritize with clarity. Features that serve your ICP get shipped first. Problems they actually experience get solved. Everything else can wait. Scary, I know, but effective (and watch your net revenue retention climb).
Understanding your ICP forces you to ask: who is the best-fit customer? What is the painful, valuable, frequent problem they need solved? And how does our product uniquely solve it for them?
2. Messaging becomes 10x easier (and more effective)
Vague messaging is one of the most common symptoms of an unclear ICP. If your homepage could be describing half a dozen other products or services, your message isn’t landing.
Clear ICP means clear messaging. When you know your customer’s job, pain, goals, and context, you can connect with them deeply. You can reflect their reality back to them. And you can position your product as a solution they understand.
This doesn’t just help top-of-funnel conversion. It helps across the board. Sales conversations become tighter, onboarding becomes smoother, investor decks sharper, and internal alignment improves because everyone is rowing in the same direction.
3. Prioritization across the business becomes simpler
Every team makes trade-offs. What to build. Who to sell to. Which customers to support. Without a clear ICP, these decisions get made reactively or emotionally.
With a defined ICP, you can use a single, shared filter: does this serve our ideal customer? Yes/No should be the only answer. Forget those fringe cases…there’ll always be fringe cases clouding your focus.
This lens sharpens product planning, informs pricing and packaging, and helps marketing know what content to create and where to distribute it. It even shapes hiring. Do you need someone who knows enterprise deals or PLG motion? That depends on who your ICP is.
4. GTM motions can‘t work without ICP clarity
The success of your GTM strategy, whether inbound, outbound, community-led, partner-led, event-led… relies on knowing who you are targeting.
Without an ICP, sales teams waste time on poor-fit leads. Marketing spends on channels that do not convert. Founders spin their wheels trying to “fix” teams, when this is fundamentally not the problem. You could hire an expensive and talented sales team, but if they’re using the wrong talk tracks or talking to the wrong prospects, then they’re not hitting target and you’re losing money.
GTM is not about tactics. It is about alignment. And alignment starts with ICP.
Ask yourself:
- Where do our ideal customers spend time?
- Who do they listen to?
- What triggers their buying process?
These answers shape the channel strategy, content plan, and the sales enablement decks.
5. Your ICP is not a persona. It is a strategic decision.
One of the biggest mistakes teams make is confusing personas with ICP. Personas can be useful, but they are often superficial. “Sarah is a 35-year-old account manager who likes coffee and uses Slack.”
ICP is sharper. It is about company size, industry, maturity, pain points, urgency, budget, decision-making dynamics, and usage patterns. It’s a decision: this is who we’re for RIGHT NOW.
Defining the ICP doesn’t mean ignoring everyone else. But it does means you can finally align your product, messaging, and GTM to serve one segment…exceptionally well. Because that’s how you win in competitive markets.
Start here, before anything else
I know how tempting it is to jump straight into building, launching, and selling. But skipping the ICP work is like building on sand. You’ll move fast, but perhaps not in the direction you want.
Here’s an easy way to get started:
- Interview your best customers
- Look at usage data
- Study closed-won deals
- Study closed-lost deals
- Identify the patterns. Codify the profile. Then pressure test it.
When your ICP is clear, everything else becomes easier. Every decision becomes faster. And your GTM becomes a focused, repeatable motion instead of a guessing game.
“We don’t have our ICP sorted…help!“
Don’t worry…all hope isn’t lost!
Connect with us if you’re struggling to define your ICP, or need a set of fresh eyes. As the foundation to build everything else on, we want you to get this right.

Sue Foley, CMO – Sanguine Strategic Advisors
After two decades of shaping GTM strategies and scaling brands, Sue Foley brings her expertise in marketing, positioning, and growth to Sanguine. She partners with entrepreneurs and business owners to cut through noise and build marketing engines that actually deliver. A creative operator and pragmatic strategist, Sue is passionate about making complex ideas simple and impactful.
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