Katana Unveils 'Modern Merchant OS' to Unify E-commerce Operations

TALLINN, Estonia – April 09, 2026 – Katana, a company known for its cloud-based inventory software, has announced a significant strategic evolution, repositioning itself as a “Modern Merchant Operating System” (MMOS). This ambitious move is designed to provide a single, unified platform for the growing number of product brands that sell across a complex web of online storefronts, marketplaces, and wholesale channels. The announcement was paired with the launch of a native Amazon FBA integration, the first in a series of new capabilities aimed at creating a central source of truth for modern commerce.

The shift addresses a well-documented and costly challenge in the e-commerce landscape. Today’s brands are no longer siloed as just manufacturers, retailers, or wholesalers; they are often all three simultaneously. A typical brand might manage a Shopify store, sell on multiple Amazon marketplaces, fulfill B2B orders, and manage inventory across its own warehouse, third-party logistics (3PL) providers, and Amazon’s FBA centers. This complexity has outpaced the capabilities of many existing software solutions, forcing businesses into a patchwork of disconnected systems and manual processes.

The High Cost of Disconnected Operations

For many small and medium-sized businesses (SMBs), the dream of multi-channel growth quickly devolves into an operational nightmare. The press release from Katana highlights that merchants can spend 10 to 15 hours per week, per channel, on manual inventory reconciliation alone. This claim is substantiated by broader industry data, which shows that 43% of small businesses either do not track inventory or rely on error-prone manual methods like spreadsheets.

This lack of real-time, synchronized data creates predictable and expensive problems. Stockouts are a primary concern, with global retailers losing an estimated $634 billion annually from lost sales when items are unavailable. Research indicates that a typical e-commerce store has an out-of-stock rate of around 8%, meaning nearly one in ten purchase attempts can fail due to poor inventory visibility. On the flip side, overstocking ties up precious capital and can increase storage costs by 20-30%, contributing to the staggering $1.13 trillion lost to overstocks each year.

These issues not only impact the bottom line but also damage customer trust and marketplace performance. Overselling on platforms like Amazon can lead to negative reviews and lower search rankings, creating a vicious cycle that is difficult to escape. The fundamental problem is a lack of a single, reliable source of truth, a gap Katana’s new operating system aims to fill.

A New Category for a New Kind of Merchant

Katana is positioning its Modern Merchant OS not as another incremental tool, but as a new category of software built from the ground up for the realities of modern commerce. Unlike complex and costly enterprise resource planning (ERP) systems like NetSuite, which can be overkill for SMBs, or niche inventory tools that lack comprehensive multi-channel capabilities, Katana aims for a sweet spot of power and usability.

“The line between manufacturer, retailer, and wholesaler has disappeared,” said Ben Hussey, co-CEO of Katana, in the company's announcement. “Today’s product brands make, buy, and sell across every channel simultaneously, and they deserve software that reflects how they actually operate. We built Katana to be the operating system for this new kind of merchant.”

This vision is backed by a strong financial footing. The company has raised over €60 million in total funding, including a recent €14 million Series B extension, with investors citing Katana's potential to redefine the ERP stack for product-based SMBs. This capital allows the company to accelerate its product development and global expansion, lending weight to its ambitious category-defining strategy.

Amazon FBA Integration: The First Proof Point

The most tangible element of Katana’s new strategy is its native Amazon FBA integration. This feature directly connects Katana to Amazon Seller Central, automating many of the manual tasks that plague multi-channel sellers.

Key features of the new integration include:

• Automated Inventory Sync: The platform automatically reconciles stock levels between Amazon FBA and Katana on a daily or weekly basis, eliminating hours of spreadsheet work and reducing the risk of overselling.
• Multi-Marketplace Support: It connects to Amazon marketplaces across North America, Europe, and the Far East, mapping each region as a distinct fulfillment location within Katana for granular control.
• Universal SKU Aliasing: A critical innovation is the new product mapping system. It translates disparate identifiers—such as Amazon Seller SKUs, Shopify product codes, and internal manufacturing part numbers—into a single, unified product identity. Katana has designed this as a core platform capability that will accelerate the rollout of future channel integrations.
• Complete Order Visibility: All orders shipped via FBA are automatically imported into Katana, providing a complete record of fulfillment and stock movement. This closes a significant data gap and allows for more accurate reporting and demand forecasting.

The FBA integration joins Katana’s existing connections with major e-commerce and accounting platforms, including Shopify, WooCommerce, QuickBooks, and Xero, creating an increasingly comprehensive ecosystem. The company has also signaled its future roadmap, which includes plans for Fulfilled by Merchant (FBM) support and integrations with additional marketplaces and 3PL providers. By building foundational technologies like SKU aliasing, Katana is setting the stage to rapidly expand its channel support, further solidifying its role as a central operational hub for its customers.