What is an API in fashion technology?
Application Programming Interface: a defined way for software systems to exchange data and trigger functions automatically.
In short
An API (Application Programming Interface) is a defined way for software systems to exchange data and trigger functions automatically. In fashion, APIs let a B2B portal read live stock from the ERP, send confirmed orders back, or connect a brand to marketplaces and retailers without manual export and import.
How does it work in practice?
One system offers an API that describes which data or actions it makes available, such as stock levels, prices or order creation. Another system calls the API with a request and receives a structured response. For example, when a retailer opens a B2B portal, the portal may ask the ERP through an API for current availability by size, and later send the confirmed order back the same way.
Compared with file based exchange, where data is exported in batches and imported later, APIs allow near real-time flows and fewer manual steps.
Why does it matter?
Fashion companies use many specialised systems. APIs are what make them work together:
- Showrooms and portals display up-to-date stock and prices
- Orders reach the ERP immediately, reducing errors
- Marketplaces and retailer platforms receive product data and stock automatically
- New tools can be added without replacing the core system
How does AI use it?
AI agents and assistants rely on APIs to do useful work. An agent that proposes a re-order, for instance, needs to read sell-through data, check stock and create a draft order, each through an API. Well documented APIs with clear permissions are therefore a precondition for safely connecting AI tools to business systems.
Common pitfalls
- Point-to-point integrations that become hard to maintain
- Missing documentation, so every new connection takes longer than planned
- Weak access control, exposing prices or customer data
- Assuming an API is real-time when the underlying data is only updated nightly
Frequently asked questions
What is the difference between an API and EDI?
EDI is an established standard for exchanging business documents such as orders and invoices, often in batches. APIs are a more flexible way for systems to request data or trigger actions directly, often in near real time.
Why do B2B portals need APIs?
A B2B portal needs live access to prices, stock and customer data held in other systems, and must send orders back. APIs make this possible without manual uploads.
