Multichannel e-commerce integration.
One stock pool, several sales channels, no overselling.
Selling on more than one channel multiplies your reach and your admin. Every channel has its own listing format, its own order structure and its own idea of what your stock level is. Done manually it consumes hours a week and eventually causes an oversell. Done properly, one system holds the truth and every channel follows it.
What’s included
- Central inventory as the single source of truth
- Near-real-time stock sync across all channels
- Order consolidation into one place for fulfilment
- Listing creation and bulk updates per channel
- Channel-specific pricing rules
- Unified reporting across every channel
- Courier and tracking updates pushed back to each channel
Deciding what owns the truth
The first architectural decision is which system holds authoritative stock. Usually it is your ERP or your own store; occasionally it is a dedicated inventory system. What does not work is each channel holding its own count and hoping they agree — that is the design that causes oversells.
Race conditions are real
Two channels selling the last unit within the same second is not hypothetical at volume. Handling it means reserving stock atomically at order creation and deciding in advance which channel wins — and how you handle the loser, since a cancelled Amazon order costs you more than a cancelled one on your own site.
Channel differences are the work
Amazon wants ASINs and its own category taxonomy. eBay has a different listing model. Etsy has its own rules. The integration layer has to translate one clean internal catalogue into each channel's expectations without you maintaining four versions of every product.
Common questions
Which channels can you integrate?
Amazon, eBay, Etsy, Shopify, WooCommerce and most systems with an API. Each is built once and extended.
How fast is the stock sync?
Near-real-time on channels that support webhooks, and on a tight schedule where they do not. I will be specific about each channel's limits before we start.
Can we use an off-the-shelf tool instead?
Sometimes you should, and I will say so. Custom integration is worth it when your catalogue, pricing rules or fulfilment do not fit what those tools assume.
What if a channel changes its API?
They do, regularly. Integrations are built to fail loudly rather than silently, and maintenance can be part of an ongoing arrangement.
Have a project in mind?
Tell me what you're building and roughly when you need it. I reply to every genuine enquiry within one working day.