Amazon Glossary

Master the Amazon O2C (Order-to-Cash) financial cycle. Learn how to calculate cash velocity, minimize reserve holds, and optimize your working capital.

Learn how to scale Online Arbitrage (OA) on Amazon. Master profit calculations, inventory sourcing, and risk management to grow your business.

Understand what OB (Obsolete) means for your Amazon inventory. Learn how to liquidate dead stock, avoid aged inventory fees, and protect your cash flow.

OB can also stand for Outbound - referring to the process of picking, packing, and shipping products from an Amazon fulfillment center to customers or other facilities. 

Master Amazon's Order Defect Rate (ODR). Learn to calculate your score, handle A-to-z claims, and keep your metric below the 1% threshold.

Master Amazon On-Hand Inventory (OH). Learn to calculate active stock, prevent geographic visibility throttling, and optimize your restock limits.

OHL stands for Other Hardlines - an Amazon product category that includes various durable goods that don’t fall into traditional hardline subcategories like electronics or tools. 

OIH stands for Order Inventory Health - a metric Amazon uses to assess how well a vendor’s or seller’s inventory supports active and expected customer demand. 

Organization and Leadership Review (OLR) is a strategic business management process used by high-growth Amazon sellers to evaluate team performance, organizational alignment, and management efficacy. It systematically assesses structure and talent density to ensure a brand possesses the leadership depth required to scale from solopreneurship to enterprise-level operations.

Optimal Minimum Order Quantity (OMOQ) is the strategic threshold defining the smallest volume of inventory a seller should procure from a manufacturer to balance per-unit manufacturing costs with long-term storage and capital holding expenses. It allows sellers to maximize their capital efficiency while minimizing the risks of overstocking or incurring sudden stockouts.

Optimize your Amazon operations with an Order Management System (OMS). Learn how an OMS prevents stockouts, syncs inventory, and boosts margins.

OMS is a centralized software platform that aggregates, tracks, and manages customer orders across multiple sales channels from origin to delivery. It automates order routing, inventory allocation, and shipping updates to ensure accurate fulfillment, preventing marketplace friction and maintaining channel synchronization.

Master Amazon Out of Stock (OOS) mechanics. Learn how stockouts damage your A9 ranking, calculate lost revenue, and protect your margins.

Master Amazon Operating Margin. Learn how to calculate profitability, optimize FBA fulfillment costs, and build a sustainable, high-margin brand strategy.

Master Amazon OpEx (Operating Expenses). Learn to track fulfillment costs, advertising spend, and overhead to protect your net profit margins.

Ordered Product Sales (OPS) is Amazon's top-line revenue metric measuring total order value at placement - the foundation for seller performance analysis.

Ordered Revenue is the total value of customer orders placed on Amazon that have not yet been shipped, calculated using the average selling price (ASP) at the time the order was placed.

Track and calculate Amazon Ordered Volume accurately. Learn how to interpret pending orders, avoid forecasting errors, and protect cash flow.

Discover how Organic Rank impacts your Amazon FBA success. Learn how the A9 algorithm uses sales velocity and conversion rates to place products.

Master Amazon organic ranking. Learn how the algorithm calculates sales velocity, improves conversion rates, and maximizes search visibility. Organic Ranking is a marketplace metric determining a product's natural position on the Amazon search engine results page for a specific keyword. Unlike sponsored placements, these positions are earned algorithmically through historical sales velocity, keyword relevance, and listing conversion rates rather than direct advertising spend.

Learn the requirements for selling Over the Counter (OTC) products on Amazon. Understand FDA monographs, labeling rules, and how to maintain account health.

Master Amazon's On-Time Delivery Rate (OTDR) metric. Learn how to calculate delivery performance, protect FBM Buy Box eligibility, and avoid account suspensions.

Master Amazon's OTIF (On-Time, In-Full) metric. Learn to calculate compliance, avoid costly Vendor Central chargebacks, and protect your margins.

Master Amazon One-Time Password (OTP) security. Learn how MFA protects Seller Central logins, prevents A-to-z claims, and secures high-value FBM deliveries.