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SimulationsTest changes on AI models of your real customers, before you ship.ExperimentationAgents launch live A/B tests, find the winner, and ship it.Review & PublishDrafts, versions, and approvals for your whole marketing team.
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An experimentation engine that never stops until your site converts

Agents propose hypotheses, launch live A/B tests on a slice of your traffic, and keep iterating until they find a statistically significant winner, then ship it for you. You set the strategy; they run it around the clock.

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lumiere.com
An A/B test running on a skincare brand's landing page
Live A/B test
Testing: headline

Hero headline test

Control3.1%
Variant AWin3.9%
Reaching significance…

Vibe coding makes it pretty. ION makes it convert.

A great-looking page is just a guess until the data says otherwise. ION treats every page as a starting point, then iterates on real traffic until it actually performs.

Vibe coding

Looks great, might convert

A one-shot generation gives you a beautiful page in minutes. Whether it actually converts is a coin flip, and it never gets better on its own.

ION

Looks great, proven to convert

ION ships that first draft, then runs experiment after experiment on real traffic, keeps only what lifts revenue, and never stops until your numbers climb.

You set the rules of the game. Agents play it.

Give ION a goal, an audience, the surfaces and levers it's allowed to touch, and the guardrails it can never trade away. Every experiment an agent runs lives inside that brief, aggressive on what you want moved, disciplined on what you don't.

Experiment strategy
Active
Goal
Lift add-to-cart rate on product pages
Audience
Paid social · first-time visitors
Surfaces
/products/*HeroPDP
Levers agents may pull
HeadlinePrimary CTASocial proofOffer framing
Guardrails you never trade away
Bounce rateAOVReturn rate
Agents may launch experimentsOn

It watches real traffic and calls the winner for you

Each test runs live on a portion of your visitors. Agents monitor performance continuously, iterate on what's not working, and the moment a variant clears your significance bar, they ship it to everyone, with no waiting on someone to read the dashboard.

Variant A · lift vs controllive traffic
95% significance

Confidence

0%

RPV lift

+0%

Decision

Auto-ship

A win has to be a win on the metrics that matter

ION judges every test on your primary metrics and your guardrails together. A bump in clicks that quietly raises returns or tanks AOV isn't a winner, and it never ships.

What it watches before shipping
Add-to-cart ratePrimary+24%
Revenue / visitorPrimary+19%
Bounce rateGuardrail−2%
Average order valueGuardrailflat
Return rateGuardrailflat

Every experiment is pre-flighted with Simulations first, so agents start from the variant your customers already favored.

See it on your site

Keep exploring

Simulations

Test changes on AI models of your real customers, before you ship.

Review & Publish

Drafts, versions, and approvals for your whole marketing team.

Great websites aren't built once.
They're improved a thousand times.

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ION DESIGN
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An AI growth team for ecommerce storefronts. Agents that find, build, and test ways to increase traffic and conversion.

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  • Experimentation
  • Review & Publish

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