Shopify's new SimGym feature — a full digital twin of your live store — solves a problem that's quietly stopped most merchants from testing anything: the fear that an experiment, even a smart one, might cost real revenue while it's running.

Traditional A/B testing takes three to six months to reach statistical significance for most small business traffic volumes. AI-powered conversion rate optimization tools are now delivering measurable results in two to four weeks. That's not an incremental improvement — it changes what's actually po...