A BigCommerce to Shopify Plus migration is the move merchants make when they outgrow what BigCommerce can do at the checkout and in the app store. Both are hosted platforms, so this is not about escaping servers, it is about conversion, ecosystem, and headroom to grow. Shopify Plus gives you a checkout that converts, the largest app ecosystem in commerce, and flat, predictable pricing. port80 runs this migration end to end as a Shopify Premier Partner.
Why migrate from BigCommerce to Shopify Plus?
BigCommerce is a capable platform, and for a lot of stores it is the right first home. Merchants tend to look at a BigCommerce to Shopify Plus migration when growth exposes its ceilings: a checkout you cannot fully control, an app ecosystem that runs out of options, and tier pricing that climbs with your sales. Here is what changes on Shopify Plus.
A checkout that actually converts
Checkout is where revenue is won or lost, and it is where Shopify Plus pulls ahead. Shop Pay is one of the highest-converting checkouts on the web, and Plus lets you customize the checkout experience with Functions and branded, one-page flows. BigCommerce’s checkout is far more constrained. Moving to Shopify Plus often lifts conversion on the exact same traffic.
The largest app ecosystem in commerce
Every store eventually needs something the platform does not do natively, subscriptions, advanced reviews, loyalty, ERP or POS integration. Shopify’s app ecosystem is the biggest in the industry, so the tool you need usually already exists, vetted and maintained. Where BigCommerce leaves you building or going without, Shopify Plus gives you a supported option, and a clean API for the genuinely custom work.
Flat pricing instead of sales-threshold jumps
BigCommerce moves you to a higher plan when your annual sales cross set thresholds, so success quietly raises your platform bill. Shopify Plus is flat-rate at the Plus tier, which makes cost predictable as you scale and keeps a good year from turning into a bigger invoice. For growing merchants, that predictability matters as much as the feature set.
A platform, and a partner, invested in your growth
Shopify ships meaningful improvements constantly and has enormous momentum behind its ecosystem, from Shop Pay to its POS and B2B tooling. Shopify Plus merchants get a dedicated Merchant Success Manager and priority support. Paired with a Premier Partner like port80, you get a platform that keeps improving and a team that knows how to make it work for your business.
Common mistakes in a BigCommerce to Shopify Plus migration
The migrations that go badly tend to make the same avoidable mistakes. The biggest is moving products and customers without mapping the URL structure, which quietly destroys years of SEO the day you launch. Others rebuild every BigCommerce workflow exactly as it was, carrying old limitations onto a platform that could have improved them. Many underestimate the data itself, the order history, customer accounts, and integrations that need careful handling. We have migrated enough stores to know where these break, and we plan for them before a single record moves.
Why merchants trust port80 with their migration
port80 started as an ecommerce development shop long before Shopify was an option to consider. We have moved a large number of stores onto Shopify Plus from BigCommerce, Magento, and beyond, and the migration itself has become one of the things we do best, data, URLs, workflows, and design handled as one project rather than a scramble.
Custom Shopify Plus solutions
A migration is only the start. From B2B and wholesale portals to custom product builders and complex inventory, we build the custom Shopify Plus functionality growing merchants need.