Ecommerce

# Ecommerce Checkout: Catalog, Cart, a Payment You Reconcile

Ecommerce is variants, shipping, tax, and a checkout thumbs can finish. A Buy button on a brochure is not a shop.

CodeLoop Studio·August 27, 2026·5 min read

![Credit card and laptop during an online purchase](https://www.codeloop.ba/_next/image?url=%2Fblog%2Fecommerce-checkout-cover.jpg&w=3840&q=75)

Photo by [Pixabay](https://www.pexels.com/@pixabay) on [Pexels](https://www.pexels.com/photo/264547/)

Ecommerce is catalog, cart, checkout, payments, and admin. If the cart dies on mobile, the theme was free and the revenue is not. A Buy button on a brochure is not a shop.

CodeLoop Studio in Sarajevo builds storefronts around SKU reality: variants, shipping, tax, a processor you already reconcile. The commercial page is [ecommerce website development](https://www.codeloop.ba/ecommerce-website-development). What a shop is versus a site or an app is [web shop](https://www.codeloop.ba/blog/web-shop). How we run the build is [how we build a web shop](https://www.codeloop.ba/blog/izrada-web-shopa).

## Proof: DigitalPlay

[DigitalPlay](https://www.codeloop.ba/study-case/digitalplay) is games and digital products: grid, cart, checkout that stay clear on a phone. Brand, not a generic template. Merchandisers should edit without a ticket. We will not invent conversion percentages.

Zagreb and Belgrade shops are market notes — [for Zagreb](https://www.codeloop.ba/blog/web-shop-zagreb), [for Beograd](https://www.codeloop.ba/blog/web-shop-beograd) — not extra offices. A restaurant menu is not ecommerce unless you sell the bottle — [QR menu ROI](https://www.codeloop.ba/blog/qr-menu-roi-for-restaurants).

## What we freeze

* **How a shopper finds a SKU and pays.** Then inventory, mail, failed-payment states.
* **Visible costs on a phone.** Fewer fields. Thumbs. Motion that delays pay is out — [motion in UI](https://www.codeloop.ba/blog/motion-design-ui-design).
* **Stack after catalogue size.** We will not start from a platform religion. Payments you already use, wired in.
* **Events you will read.** Checkout started, payment failed — [event tracking plans](https://www.codeloop.ba/blog/event-tracking-plans). Not a graveyard of unnamed clicks.

## When this is the wrong page

A SaaS with tenants is not a cart — [SaaS agency](https://www.codeloop.ba/blog/saas-development-agency). A company brochure is [company websites](https://www.codeloop.ba/blog/izrada-web-stranica-za-firme). Blockchain as a checkout gimmick is [when not blockchain](https://www.codeloop.ba/blog/when-not-to-build-blockchain).

## Send SKU count and how you take money today

Reply in **24 hours** — [online estimate](https://www.codeloop.ba/online-estimate) or [contact](https://www.codeloop.ba/contact).