That's an excellent question and one that concerns many startup entrepreneurs. The primary distinction lies in flexibility versus efficiency.

A standard platform (such as Odoo E-commerce, Shopify, BigCommerce, or Magento) provides a ready-to-use foundation with all essential features. The development time is shorter, and the initial webshop costs are lower. However, you are bound by the platform's structure, although platforms like Odoo offer extensive scope for configuration and applications.

A custom webshop is built from the ground up. This provides complete flexibility for unique functionalities and design. While ideal for complex business models, it entails significantly higher costs and development time. Maintenance and updates also fall under your responsibility.

For most companies, a scalable e-commerce platform offers the best balance. It is a standard platform that you can customize extensively without the high costs of a fully customized shop.