Online Store - How to Choose an E-Commerce Platform? Comparison of Engines, Costs, and Implementation Models.
Choosing an e-commerce platform is a fundamental architectural decision that directly determines operating costs, scalability, and the level of technical team involvement. Combining global telemetry data with analysis of implementation models allows us to precisely match the technology to the stage of business development.
The Global E-Commerce Technological Landscape
Wappalyzer's market data on shopping cart functionality ( Cart Functionality ) implementations indicates a clear dominance of English-speaking markets, with the United States accounting for 50% of detected sites and Canada for 15%. This translates directly to the languages used by online stores: English accounts for a staggering 63% of the total, ahead of French (8%), Spanish (8%), and German (4%). Polish accounts for 2% of the global share.

In terms of technology, the market is dominated by four ecosystems, each supporting over a million active websites:
Wix eCommerce (1,500,000 sites) and Squarespace Commerce (1,300,000 sites) – solutions derived from website builders, optimized for quick, coding-free setup.
Shopify (1,400,000 sites) – a specialized all-in-one SaaS environment that takes care of the server, database, and transaction layer management.
WooCommerce (1,400,000 sites) – the only open-source system at the forefront, working as a flexible plugin for the WordPress environment.
Dedicated open-source and regional systems – a segment with lower volume but high technical specialization: PrestaShop (190,000), 1C-Bitrix (110,000), Magento (67,000), OpenCart (29,000) and Shopware (27,000).
SaaS vs. Open-Source: Analysis of Implementation Models
Dimension | SaaS platforms (e.g. Shopify, Wix, Squarespace) | Open-Source Platforms (e.g. WooCommerce, PrestaShop, Magento) |
Settlement model | Fixed subscription + transaction fees | Free base license; hosting, domain, and module costs |
Infrastructure | Fully managed by the provider (security, backups) | Requires own hosting, monitoring, and manual updates |
Access to the code | Closed ecosystem, expandable via API and applications | Full access to source files, database, and templates |
Entry threshold | Low – the store can be launched within a few hours | Medium to High – Requires webmaster skills or IT support |

Key criteria for platform selection
Total Cost of Ownership (TCO): In subscription models, the base fee is just the starting point; actual expenses increase with paid third-party applications and payment gateway fees. Open-source systems have lower upfront costs, but ongoing costs include maintaining secure hosting and developer support.
Scale and specificity of the product range: Simple product catalogs and direct-to-consumer (D2C) sales work perfectly on Shopify or Wix. Complex B2B scenarios, multi-currency support, multi-warehouse support, and specific product configurators typically require the architecture of Magento or the modularity of PrestaShop.
Marketing Ecosystem and Integrations: Managing sales requires consistent data exchange with warehouse systems (ERP), CRM, and email/SMS marketing automation tools. Global market leaders provide ready-made, official integrations with analytical tools, drastically reducing the time and cost of implementing cart recovery and customer segmentation processes.
The statistical popularity of a solution shouldn't be the deciding factor. The optimal platform is one whose architectural limitations won't hinder the company's operational processes, and whose maintenance costs are proportional to the margin generated.
At Milimetriks, we strive to select tools that are optimal for a given business, depending on its scale and development plan. Thinking long-term definitely helps you choose the right solution.
Regards
Małgosia from Milimetriks :)

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