Your Omnichannel Strategy is Leaking Margin. It's a Data Plumbing Problem.

Aug 21, 2025

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In 2020, a tale of two retailers unfolded. Best Buy, facing pandemic store closures, leaned into its omnichannel strategy. It turned its stores into mini-distribution hubs and rolled out curbside pickup, leading to a staggering 242% surge in online sales. They didn’t just survive; they thrived. Meanwhile, Nordstrom Rack tried to ride the same wave and completely wiped out. Their attempt at “buy online, pick up in-store” (BOPIS) was a disaster. Store associates couldn’t find items the system claimed were in stock, leading to a flood of canceled orders and angry customers. The program imploded so badly they had to publicly shut it down, and their digital sales fell 16% as a result. 1

So, which path is your business on? The difference between Best Buy’s triumph and Nordstrom Rack’s failure wasn’t the idea. It was the execution. And flawless omnichannel execution lives or dies by the quality of your data plumbing.

The Real Reason Omnichannel Fails: Leaky Data Pipes

Everyone loves to talk about the shiny, customer-facing parts of omnichannel—curbside pickup, in-store returns, endless aisles. But those services are just the tip of the iceberg. The real, foundational work that makes or breaks these initiatives lies beneath the surface, in the unglamorous world of data integration.

I’ve boiled down a successful omnichannel operation to three core pillars: Fulfillment Flexibility, Unified Data, and the most important one of all, Inventory Truth. 1

Inventory Truth is the non-negotiable foundation: a single, real-time, and accurate version of your inventory across every single channel. If your website thinks an item is in stock at the downtown store but the shelf is actually empty, you’ve just set a customer up for disappointment. You can’t sell what you can’t find. 1 Without Inventory Truth, every promise you make to an omnichannel customer is a high-stakes gamble.

Diagnosing Your Leaks: A Data Plumbing Health Check

Not sure if your data pipes are solid or leaky? Here’s a quick health check. Be honest with your answers.

Do you still rely on nightly CSV file uploads to update your website’s inventory? If you’re manually dragging spreadsheets around or running a batch job once every 24 hours, you’re in the “Crawl” stage of integration maturity. A lot can sell out in a day, and your website is flying blind for most of it. 1
What is your cancellation rate for online pickup orders? Is it higher than 2-3%? A high cancellation rate is a direct symptom of inaccurate data. It means you’re consistently promising items you can’t find. This was the very problem that sank Nordstrom Rack’s efforts. 1
Can a store associate easily look up a customer’s online order history from the point-of-sale? If the answer is no, you lack “Unified Data.” Your online and offline channels are operating as separate islands, and your customer feels like two different people depending on where they shop. 1

If any of these questions made you wince, you’ve got some leaky pipes to fix.

The Playbook for a Profitable Omnichannel Engine

Fixing your data plumbing doesn’t require a massive, multi-year “boil the ocean” project. The smart way to do it is by following a structured, low-risk framework I call “Crawl, Walk, Run.” It’s about maturing your integrations step-by-step. 1

Crawl: Start with the basics. If you’re doing things manually, the first step is to get a reliable, if not real-time, data sync established. This might still be a nightly automated file transfer, but it’s consistent and doesn’t rely on someone remembering to do it.
Walk: Now, you automate and increase the frequency. Move from nightly syncs to hourly or even 15-minute batch updates. This is where many growing merchants land, using an integration platform or built-in connectors to dramatically shorten the time their data is out of date.
Run: This is the goal. At the run stage, you graduate to real-time, event-driven updates. When an item sells in-store, an event is fired that instantly updates the website’s stock. This is usually achieved with modern APIs or a middleware layer that handles the data flow in seconds.

This methodical approach allows you to make steady progress, prove the value at each stage, and avoid the risks of a massive, all-at-once overhaul.

Your First Project: Fixing Inventory Truth

Ready to get started? Your first and most critical project should be fixing Inventory Truth. That means creating a reliable, high-frequency sync between your ERP (or whatever system holds your master inventory) and your e-commerce site.

A few years ago, I got a frantic call from a B2B merchant who sells industrial pipe fittings. They had just oversold a critical part, costing them over $200,000 in rush fees and penalties to make it right. The cause? A single, delayed batch sync between their website and their ERP. An order got stuck in the queue, the website’s inventory count was wrong, and a massive new order was placed for stock that didn’t exist. 1

This is the danger of “silent failures” in your data plumbing. You don’t know a sync has failed or been delayed until a customer is screaming. That’s why, whatever technical approach you take—whether it’s using an integration platform (iPaaS) or building a custom middleware connection—you must build in observability and alerts from day one. 1 Assume things will break. Have a monitor that screams if an inventory update hasn’t been received in the last 15 minutes. Log every sync, catch every error, and send up a flare when something goes wrong. You want to know about a problem at 3:01 AM, not at 10:00 AM when the customer service calls start rolling in.

Conclusion

A world-class, and more importantly, profitable , omnichannel experience isn’t something you can just buy off the shelf. It must be built on a solid foundation of excellent data plumbing. The companies that win are the ones that obsess over the boring, behind-the-scenes work of making sure their data is accurate, in-sync, and reliable. They treat their data infrastructure with the same care as their marketing campaigns, because they know one can’t succeed without the other.

For a deeper look at the frameworks for building this foundation, including the “Crawl, Walk, Run” model and detailed integration playbooks, check out my new book, The Ecommerce Growth Playbook. It’s the definitive blueprint for avoiding the costly operational mistakes that sink competitors and for building an omnichannel engine that truly works. You can grab your copy on Amazon today.

Works cited

The-Ecommerce-Growth-Playbook-Print.pdf