E-commerce Architecture / KNOWLEDGE BASE
How to Plan an Online Store: Catalog, Checkout, CRM, and Integrations
An online store is more than a catalog and cart. Real e-commerce connects product data, search, pricing, inventory, checkout, payments, logistics, CRM or ERP, and SEO into one operational system.
Start with product data
Before designing a product page, define catalog structure, categories, attributes, variants, brands, prices, stock levels, and the source of truth for these values.
If the catalog comes from ERP, XML, CSV, or an API, synchronization becomes a separate module with its own rules, failures, and update frequency.
Plan filters and SEO together
Filtering affects both UX and indexation because filter combinations can generate large numbers of URLs.
Rules for faceted navigation, canonical URLs, indexable landing pages, and duplicate prevention should be defined with information architecture rather than repaired after thousands of technical URLs appear.
Describe the full checkout flow
Define contact data, address or pickup location, delivery method, payment, coupons, confirmation, and order creation as one complete scenario.
Also define what happens after failed payments, repeated webhooks, abandoned checkout, or inconsistent state between the store and payment provider.
Define CRM and ERP responsibilities
After an order is created, data may need to enter CRM or ERP, reserve inventory, create a shipment, issue a document, or trigger warehouse operations.
The project must define which system is authoritative for products, prices, inventory, order statuses, and customer data.
Account for scale and performance
A catalog with one hundred products and one with one hundred thousand require different approaches to search, caching, imports, indexing, and background jobs.
Catalog size, update frequency, traffic expectations, and SEO requirements should be part of the engineering scope before implementation starts.
Plan or build your web system
Define the MVP, architecture, integrations, timeline, and budget before moving into production development.