How to evaluate a vendor demo without getting sold

A good demo is engineered to make you feel behind. The product is pre-loaded with perfect data, the rough edges are off-screen, and somewhere in the first five minutes someone mentions that your competitors are already using it. That feeling — everyone else has this and we don’t — is the actual product being sold. It’s also the most expensive way to make a purchasing decision.

Here’s how to watch a demo so the demo doesn’t watch your budget.

1. Write down the problem before the demo, not after

Decide what specific problem you’re trying to solve and which metric it should move before the vendor opens their slide deck. Be concrete: not “improve visibility” but “cut mean time to detect from 40 minutes to under 10.” If you can’t name the problem and the number, you’re not evaluating a solution — you’re shopping for a feeling. Do this in writing and bring it to the call.

If you’re not sure whether the urge to buy is coming from a real gap or from envy, the FOMO Self-Assessment scores exactly that in six questions.

2. Separate what’s shipping from what’s “on the roadmap”

Demos blur the line between what exists today and what’s coming “soon.” Every time you see something impressive, ask one question: is this generally available right now, or is it roadmap? Write GA or ROADMAP next to each feature you care about. You are buying the GA column. The roadmap column is a hope, and hopes slip.

3. Find the overlap with tools you already own

Most “new category” products overlap heavily with something already in your stack — your SIEM, your ITSM tool, your cloud provider’s built-in features, a platform you’re paying for and underusing. Before you add a tool, map what it duplicates. The honest question isn’t “is this good?” — almost everything demos well — it’s “what does this do that our current tools genuinely can’t?”

If the marketing copy is too dense to tell, paste it into the Pitch Translator: it strips the buzzwords and tells you what the product actually does and what it likely overlaps with.

4. Ask the sales engineer the sharp questions

The sales rep handles the vibe; the sales engineer (SE) knows where the bodies are buried. Get the SE on a call and ask:

• How does pricing actually scale — per seat, per data volume, per connector, per environment?
• What’s the real integration path with our specific stack, and what breaks?
• What’s GA today versus on the roadmap, with rough dates?
• What’s the one thing customers are most surprised to learn during onboarding?
• What does this solve that our existing tools can’t — specifically?

A good SE will answer plainly. Evasiveness on pricing or GA status is itself an answer.

5. Turn it into a verdict you can defend

Gut feeling doesn’t survive a budget review, and it shouldn’t. Score the decision on what actually matters — documented problem, measurable metric, real gap, an owner for adoption, a defined “success” and “kill it” — and let that produce a recommendation. The Anti-FOMO Decision Framework does this as a weighted worksheet and gives you a Proceed / Pilot / Park verdict you can put in front of finance.

The one-line version

Buy because you have a named, quantified problem that your current tools genuinely don’t solve — not because a demo was slick or a competitor announced something. If the strongest argument for a purchase is that other people made it, that’s not a business case. It’s FOMO.