Montreal, QC, Canada Business Est. 2011 www.diffagency.com

Diff is the agency behind the most successful brands on Shopify. Our agency is built by retailers for retailers. We help our clients: Increase sales, Eliminate manual burden and optimize back-office operations, and Engage their customers with lightning-fast and beautiful digital experiences. We offer everything you need to grow your business, all under one roof: Design, Marketing & Brand Strategy, Website Development, and Integrations and Custom Application Development.

Other locations

  • Toronto, Canada
  • New York, United States



Diff’s team of digital marketers, designers, engineers and quality assurance specialists worked in concert to overhaul the BESTSELLER web presence and seamlessly introduce it overnight.

Helen Gooding, Social Media CuratorBestseller

It's extremely helpful to work with a partner who understands the challenges of eCommerce and to have a scalable development team on-call to work with, so we can focus on making our products better, designing our stores and designing a shopping experience that people love to engage with.

Dan Weisman, Director of eCommerceMinistry of Supply

I’m super happy with what Diff was able to deliver within the timelines that we set. I would recommend Diff to anyone migrating from any platform to Shopify Plus or starting from scratch on Shopify. They do quality work and there are great people on the team.

Victoria Ellis, Director of e-commerceYM Inc

Diff delivered a fully tested app that exceeded expectations for usability, efficiency and performance, and delivered it ahead of schedule. The team was very much involved in the whole strategy and implementation process, from on-site research and production process mapping to UX design and testing.

David Dunn, Vice President, eCommerce & Customer LoyaltyPopsockets

Switching ecommerce platforms is never an easy decision nor a simple task. We knew that Effy needed a partner that had design and development expertise and could solve our unique business and operational challenges. After a long and extensive search, we decided diff was that partner.

Mitch Ebrahimi, Ecommerce ManagerEffy

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