We build on the commerce platforms that match your scale and growth trajectory: from Shopify to fully custom headless architectures.
Ecommerce development is the building of an online store: product catalog, search and filtering, cart and checkout, payments, inventory and order systems, and the integrations that connect them to shipping, accounting and marketing tools. Stores are built on hosted platforms such as Shopify, on WooCommerce, or as headless builds where a custom front end reads from a commerce API.
GrossiWeb is a web development agency founded in 2006 and based in Atlanta, Georgia, serving Raleigh, Los Angeles and businesses nationwide. Its ecommerce development service covers Shopify and Shopify Plus builds, headless commerce on Next.js with the Shopify Storefront API, and platform migrations such as WooCommerce to Shopify, and is quoted after a scoping call.
Ecommerce development is the intersection of UX, performance, and business logic. Your checkout flow, your inventory system, your product discovery: each one has a direct impact on revenue. We build and optimize each one deliberately.
Custom themes, app integrations, Shopify Plus builds, and checkout optimizations.
Next.js + Shopify Storefront API for maximum performance, flexibility, and brand control.
WooCommerce to Shopify, custom platform to headless: migrations that preserve your SEO and improve your performance.
40.2%
of all websites run on WordPress, which is 58.8% of sites with a known content management system
11,334
new security vulnerabilities found in the WordPress ecosystem in 2025, 91% of them in plugins
46%
of those vulnerabilities had no fix from the developer by the time they were publicly disclosed
63.7%
of ecommerce sales in August 2026 were placed on a mobile device; desktop took 34.7%, tablets 1.6%
An ecommerce agency designs, builds and maintains online stores and the systems behind them, with the checkout, product discovery and performance work that decides how much of the traffic turns into orders. GrossiWeb builds custom Shopify themes, app integrations and checkout optimizations, headless storefronts on Next.js for stores that need full control of speed and brand, and migrations that preserve search rankings.
Shopify suits most stores because the platform handles hosting, payments and security and the theme can be customized deeply. Headless commerce, a Next.js front end on the Shopify Storefront API, suits stores that need faster pages, custom layouts or content and commerce in one site. WooCommerce remains reasonable for a store already on WordPress with a small catalog; GrossiWeb migrates it to Shopify when performance, security or app costs become the problem.
GrossiWeb quotes ecommerce builds after a scoping call and does not publish a starting price, because catalog size, integrations, custom checkout logic and migration work move the figure more than page count does. The quote fixes the scope, the platform and the timeline, and separates platform subscription and app fees, which the store owner pays directly. After launch, a maintenance and support plan from $250 a month covers routine changes.
A firm that builds and maintains online stores, including the platform setup, theme or custom front end, payments, integrations and the performance and conversion work that turns visitors into orders. GrossiWeb builds on Shopify and headless Next.js and runs the store's SEO and Google Ads from the same team, so tracking is set up once.
No ranking is authoritative; directories such as Clutch list agencies by reviews and location, and the useful test is whether a developer can show live stores, explain platform trade-offs and keep the store in your name. GrossiWeb builds stores for ecommerce and retail businesses from Atlanta and works nationwide; its wider development offer is on the development services page.
The 80/20 rule is the observation that a small share of products or customers, often around 20 percent, produces most of a store's revenue. It guides which products get the best pages, which customers get retention email, and where testing time goes. GrossiWeb uses the store's own sales data to find that share during CRO consulting and analytics and reporting.
Development work rarely stands alone. These are the services we most often pair with this one.