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O2C (Order to Cash) Glossary
O2C (Order-to-Cash) is the full pipeline between a customer pressing buy and the money being settled in your bank account: the order itself, the fulfilment that satisfies it, the settlement cycle inside Amazon, the reserve rules that hold some funds back, and the disbursement that finally…
OA (Online Arbitrage) Glossary
OA (Online Arbitrage) is the practice of buying discounted products from retail websites and reselling them on Amazon at a higher price — profit coming from the spread between what a retailer is charging today and what the marketplace is paying.
OB (Obsolete) Glossary
OB (Obsolete) is the inventory status and vendor replenishment code that marks a product as permanently discontinued, superseded, or no longer supported — and instructs Amazon’s purchasing systems to stop ordering it. For a vendor item, that means the bulk purchase orders simply end.
OB (Outbound) Glossary
OB (Outbound) covers everything that leaves an Amazon fulfilment centre: customer orders being picked, packed, and shipped; transfers moving stock between facilities; Multi-Channel Fulfilment orders heading to other sales channels; and removals going back to the seller or off to disposal.
ODR (Order Defect Rate) Glossary
ODR (Order Defect Rate) is the share of orders that generated a negative customer experience, measured over a rolling 60-day window. Amazon counts three kinds of defect: negative seller feedback, A-to-z Guarantee claims, and credit card chargebacks.
OH (On-hand Inventory) Glossary
OH (On-Hand Inventory) is the quantity of sellable stock physically sitting in a warehouse and available to fulfil an order right now.
OHL (Other Hardlines) Glossary
OHL (Other Hardlines) is a catch-all classification in Amazon’s retail and analytics systems for durable, non-consumable physical products that do not belong in the major hardlines groups — home improvement, automotive, tools, consumer electronics.
OIH (Order Inventory Health) Glossary
OIH (Order Inventory Health) measures how ready your inventory is to meet current and upcoming order demand: the depth, availability, and positioning of stock against the volume that is coming.
OLR (Organization and Leadership Review) Glossary
OLR (Organisation and Leadership Review) is the management discipline high-growth sellers use to examine team performance, structure, and leadership depth — asking systematically whether the organisation can carry the business through its next stage.
OMOQ (Offer Minimum Order Quantity) Glossary
OMOQ (Offer Minimum Order Quantity) is a listing-level setting that defines the smallest number of units a customer must buy in a single transaction for your offer to be checkout-eligible. It lets a seller enforce a multi-unit minimum directly on a standard product detail page.
OMS (Order Management System) Glossary
An OMS (Order Management System) is the software layer that manages orders across every channel you sell on: collecting them, routing them to the right place to be fulfilled, keeping stock levels synchronised, and pushing shipping updates back out.
OOS (Out of Stock) Glossary
OOS (Out of Stock) is the status where a listing has zero sellable units available. The offer cannot be bought, the Buy Box goes to nobody or a competitor, and the listing effectively disappears from the shopping experience until stock returns.
Operating Margin Glossary
Operating margin measures the share of revenue that remains after the core costs of running the business — product, fulfilment, advertising, software, people, and premises — before interest and tax.
OpEx (Operating Expenses) Glossary
OpEx (Operating Expenses) covers the ongoing costs of running the business day to day: advertising, software subscriptions, warehousing, labour, third-party services, and the rent and admin of keeping the lights on. Where product development is spent once, OpEx is spent every month, forever.
OPS (Ordered Product Sales) Glossary
OPS (Ordered Product Sales) is the total value of products customers ordered in a period — counted at the moment the order is placed, before cancellations, returns, or refunds.
Ordered Revenue Glossary
Ordered revenue is the value of everything customers ordered in a period, regardless of whether it has shipped, been delivered, or been returned — recorded at the order date, at the average selling price the customer actually paid at that moment.
Ordered Volume Glossary
Ordered volume counts the units customers ordered across a period — gross demand in units rather than value, captured before cancellations, payment failures, or returns are deducted. It is the raw throughput number: how many units the marketplace was asked to move.
Organic Rank Glossary
Organic rank is a product’s unpaid position in Amazon’s search results for a specific query — the listing’s natural placing, earned through algorithmic assessment of relevance, customer satisfaction, and historical performance rather than bought with ad spend.
Organic Ranking Glossary
Organic ranking is the natural position a product holds on a keyword’s search results page — the placing earned through sales velocity, keyword relevance, and conversion rate rather than through advertising spend.
OTC (Over the Counter) Glossary
OTC (Over the Counter) covers healthcare products customers can buy without a prescription — both medications and devices.
OTDR (On-Time Delivery Rate) Glossary
OTDR (On-Time Delivery Rate) is the share of merchant-fulfilled parcels delivered to customers by or before the promised delivery date. It is measured on tracked packages over a rolling window, and it is one of the performance metrics that decide whether an FBM seller keeps their privileges.
OTIF (On-Time, In-Full) Glossary
OTIF (On-Time, In-Full) is the supply-chain standard Amazon applies to inbound freight: did the exact quantity ordered arrive at the specified facility within the agreed delivery window? Both halves must be satisfied — the full quantity, and inside the window.
OTP (One-Time Password) Glossary
OTP (One-Time Password) is a single-use code, valid for one login or one handover, used to prove identity at a specific moment. On Amazon it serves two distinct purposes: protecting seller accounts through multi-factor authentication, and verifying high-value deliveries at the doorstep.
Oversize Tier Glossary
The oversize tier is the FBA classification for products exceeding the standard-size limits — too long, too wide, too tall, or too heavy.
OTT (Over-the-Top Advertising) Glossary
OTT (Over-The-Top) advertising is streaming-TV video advertising — non-skippable spots delivered over the internet to viewers rather than through traditional cable, appearing within the Amazon ecosystem on properties like Prime Video, Freevee, and Twitch.
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