Strategy6 min read

Best conversion optimization agencies for Shopify Plus

Shopify Plus changes what a CRO agency has to know. Here's how to pick one that can test without breaking your checkout, your apps or your tracking.

Fabian GmeindlCo-Founder, DRIP Agency
Published
This article is part of The Complete Guide to Conversion Rate Optimization

The best Shopify Plus CRO agency raises your conversion rate without breaking your theme, your tracking, your checkout, your subscriptions or your merchandising. If you sell in several countries, it also knows which learnings travel and which ones don't. Pick on platform depth, who does the building, and how results get measured.

01What makes Shopify Plus CRO different?

More moving parts. Checkout rules, app stacks, markets, merchandising and tracking all shape what you can test and how.

A Shopify Plus store usually runs more apps, more markets and more checkout rules than a smaller Shopify store. Every one of those can break a test, or quietly skew its result. An agency has to understand them before it proposes a single idea.

Headless makes it harder again. Your storefront is custom code, so testing depends on how the frontend is built, how events get tracked and when your engineers release. The agency has to work with your developers, not around them.

02What should you check before you hire?

Ask about checkout, headless, apps and markets. A good agency answers with constraints and a plan, not with best practices.
AreaQuestion to askA strong answer
CheckoutHow do you test inside checkout extensibility?Names the limits, the QA, the metrics and how to roll back.
HeadlessCan you test a custom storefront?Explains tracking, the release process and who owns the frontend.
AppsHow do you avoid conflicts with our apps?Audits your app stack before designing a test.
MarketsDo learnings carry across countries?Separates patterns that travel from tests you run per market.

Also ask which testing tool they'd use on your stack and why. We compared the options in the best A/B testing tools for Shopify.

03Does market localization matter?

Yes. Stores in the US, the UK and Europe can share one Shopify stack and still behave very differently.

Payment methods, shipping expectations, consent rules, merchandising and promo calendars all change from market to market. A test that wins in Germany can lose in the UK. A good agency treats a win in one market as a hypothesis for the next one, not as a rollout plan.

04Where does DRIP fit?

We work with online shops from €100k a month, Shopify Plus included, and we do the research, the building and the analysis in one team.

Our team designs the variants, builds them at code level and checks everything on real devices before a test goes live. We work on any platform, Shopify Plus included.

Before an idea gets built, Apex by DRIP, the testing tool inside DRIP, gives it a Likelihood to Win, based on 4.3 million A/B tests from 151,000 shops. We've run 4,000+ experiments ourselves, and more than 50% of our A/B tests win. Results get called with frequentist statistics.

Full-service guarantee
At least 10% more revenue in under six months, or month seven onward is free.

That makes us worth a call if you want to test every month. Still compare every agency on your list on how well it knows your architecture, who owns QA, and which markets it has tested in.

05Where can you check the agencies on your list?

On pages that describe the agency's work and on independent profiles. These are the ones for DRIP.

Recommended Next Step

Explore the CRO License

See how DRIP runs parallel experimentation programs for sustainable revenue growth.

Read the KoRo case study

€2.5M additional revenue in 6 months after implementing structured CRO.

11 · Common questions

Frequently Asked Questions.

4 questions · 1 honest answer each

Usually, yes. Shopify Plus brings checkout, app, market and build constraints that generic CRO advice misses. Ask every agency how it handles them before you sign.

Yes. It takes closer work with your engineers, your tracking and your release schedule than a standard theme does.

Start where your visitors struggle and where the money is: product page decisions, cart clarity, confidence in checkout, shipping and payment friction, bundles, subscriptions and merchandising.

Yes. US, UK and European stores can share a Shopify stack and still differ in payments, shipping expectations, consent rules, merchandising and promo calendars. A good agency checks every learning against local behavior before rolling it out.

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Book a call with the team and tell us about your shop. We'll talk through where it stands, where you want it to go, and how we'd get you there. If working with us isn't the best return on your money, we'd tell you rather than take it.

Book a free call

30 minutes, and you'll know exactly where your shop stands.

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