A founder we know got asked at an industry dinner who her agency worked with. "B2B SaaS," she said. The person nodded politely and moved on. She realized later that's the same answer given by maybe 200 other agencies at that dinner. It's the answer given by firms doing paid ads, firms doing branding, and firms doing product strategy. It's the agency version of "We help businesses grow."

"B2B SaaS" isn't an ICP. It's the first layer of one. And if that's where your answer stops, the downstream effects show up in every part of your business: sales cycles that drag, proposals that sound like everyone else's, teams spread across too many verticals to get fast at any one of them.

In a recent episode, Peter and Sei-Wook walked through the five dimensions of a real ICP. The useful reframe is that ICP isn't a marketing targeting exercise. It's an operational discipline. A well-defined ICP shortens your sales cycle, sharpens your delivery, and lifts your margins. A fuzzy one costs you in all three places, quietly, every quarter.

Here's the honest version, which Peter gets to early in the episode: every bad client you've ever had, you chose. They came through your sales process. You saw the signals. You took them anyway because they had budget and a need. An ICP is how you give your future self permission to say no to that client before they become a six-month drag on your team.

The five dimensions, in the order they're worth defining:

1. Firmographics

The easy part. Industry, revenue stage, team size, geography, business model, tech stack. Most agencies we talk to stop here, and most stop too shallow.

"We work in tech" is not a firmographic. Tech includes cybersecurity, dev tools, consumer apps, fintech, and infrastructure, all of which buy differently, hire differently, and run differently. "B2B SaaS" is closer, but still broad enough to be useless.

A more useful version sounds like: Series A to B SaaS on HubSpot who've outgrown their first marketing hire. Or: shelf-stable food brands doing $5M to $30M on Shopify. Or: PE-backed professional services firms in their first year post-acquisition.

The rule of thumb: if another agency can claim the same ICP you can, go one level deeper.

2. Buying triggers

Something like 99% of your prospects aren't in market at any given time. The question isn't "who do we want to reach." It's "what pushes them from not-in-market to in-market."

Triggers are events: a funding round, a new executive hire, a product launch, a regional expansion, a platform migration, a PE acquisition. They're observable from the outside. LinkedIn tells you when a CMO moves. Crunchbase tells you when the round closes. Press releases tell you when the expansion is coming.

This is the part of ICP that changes what your business development actually does on Monday. Instead of generic outbound, you're watching a list of accounts for signals and reaching out when one fires. Peter shares a good example in the episode: a client who'd been budget-strapped got acquired, suddenly had money, and came back to the agency because the account was live in their heads the moment the trigger hit.

3. Success definition

What is the client actually trying to achieve? Not what your agency is good at delivering. What moves the needle for them.

There are usually two answers, and you need both. The business outcome (grow sales 30%, launch in a new region by Q3, re-platform before the next fiscal year) and the personal outcome for the stakeholder (hit my OKRs, make my boss look good, don't get flagged in my first 90 days on the job).

The trap Peter names is being agency-oriented instead of client-oriented: "we do great work, we have a strong process, our team is senior." That's you-talk. Client-oriented sounds different. It starts with what success looks like six months after the engagement ends, and works backwards to whether you can credibly deliver it.

4. Buying committee

Who actually makes the decision? Who owns the budget? Who's the champion pushing internally? Who's the technical gatekeeper whose nod you need?

The anti-pattern is talking to a single enthusiastic contact and assuming the deal is progressing. Sometimes that person is a coordinator assembling proposals. Sometimes they're a champion without real authority. Sometimes the budget lives with marketing but the CTO has veto power and no one told you. If you don't map the committee early, you find out in month three, when the deal goes another direction and you can't figure out why.

Sei-Wook's example in the episode: marketing owns the budget, marketing is driving the project, but the CTO is the loudest voice in the room and has quietly killed the deal by week four. You never spoke to the CTO.

Your job during the sales process is usually to equip the champion with what they need to sell it internally. That only works if you know who they're selling to.

5. Disqualifiers

This is the Charlie Munger "invert, always invert" move. The first four dimensions define who you want. This one defines who you won't work with, even if they show up with money.

Common disqualifiers from the episode: no clear owner on the client side, no urgency or trigger, no defined budget, a history of churning through five agencies in a year, fundamental misalignment on how you work. Plus value alignment, which is its own category: industries or affiliations you just don't want to touch.

Writing these down matters more than you'd think. In the moment, when a lead with budget shows up and says yes to everything, the disqualifiers are easy to rationalize away. On paper, in advance, they're non-negotiable. That's the whole point of writing them down.

Start with your last 10 clients

The practical move from the end of the episode is an audit, not a brainstorm. Take your last 10 signed clients. For each one, fill in the five dimensions. Then look at the three or four best ones, the engagements where margins were good, the team was energized, the work generated referrals. What do those three or four have in common across the five dimensions?

That's your real ICP. Not the one in your pitch deck. The one your business actually executes on when it's working.

And then the question worth sitting with: is that the ICP you want to keep, or the one you want to evolve away from? Either answer is useful. What's not useful is leaving it at "B2B SaaS" and hoping the market sorts it out.

As Peter put it at the end of the episode, ICP doesn't shrink your market. It focuses your energy. That's the trade you're making when you define it precisely: less addressable surface area, more leverage on every deal you pursue.