A great commerce experience cannot be distilled to a single number. It’s not a Lighthouse score,or a set of Core Web Vitals figures,although both are important inputs. A great commerce experience is a trilemma that carefully balances competing needs of delivering great customer experience,dynamic storefront capabilities,and long-term business — conversion,retention,re-engagement — objectives. As developers,we rightfully obsess about the customer experience,relentlessly working to squeeze every millisecond out of the critical rendering path,optimize input latency,and eliminate jank. At the limit,statically generated,edge delivered,and HTML-first pages look like the optimal strategy. That is until you are confronted with the realization that the next step function in improving conversion rates and business.