TL;DR
Becoming a seller on Amazon means registering on Seller Central, picking the right fulfillment model for your volume and margins, and putting an order management system in place before scale makes manual inventory updates. Sellers who treat order management as an afterthought tend to hit overselling, cancellations, and Order Defect Rate problems right when their business starts to take off.
👉 See how Increff OMS keeps Amazon orders accurate at scale
Nearly two million third-party sellers compete on Amazon today, and most online product searches now begin on the platform, which means the bar for operational reliability, order accuracy, on-time dispatch, and low cancellation rates is set by your toughest competitor, not by Amazon's minimum requirements. Many sellers already have some inventory or listing tool in place but still struggle with stock mismatches across channels. The issue usually isn't a lack of data, it's whether the systems behind the storefront can turn that data into accurate, real-time decisions before a customer ever sees a "currently unavailable" listing.
If you're an Ecommerce Manager or Founder weighing Amazon as your next sales channel, you've likely run into the same pattern: registering an account and listing a first product is straightforward, but staying competitive once orders start arriving from multiple channels at once is where most sellers struggle. Stockouts on fast-moving SKUs, excess inventory sitting in the wrong warehouse, and last-minute cancellations because two channels both thought they had the last unit.
How to Register as a Seller on Amazon
- Visit the Amazon Seller Central registration page: Begin by creating an account on Seller Central.
- Enter your business details: Provide necessary information, including business name, address, and contact details.
- Choose your preferred fulfillment model: Decide between Seller Flex, MFN, FBA, or Direct Fulfillment based on your business needs.
- Verify your account: Complete the verification process by submitting required documentation.
- Start listing products: Once verified, you can list your products and start selling to customers worldwide.
What Fulfillment Models Can Amazon Sellers Choose From?
Amazon gives sellers several distinct fulfillment paths, and the right one depends on order volume, warehouse capability, and how much control you want over the customer experience.
- Seller Flex: An invite-only program allowing sellers to manage inventory and fulfillment from their own warehouses while leveraging Amazon's logistics network. This model offers enhanced control over operations and can lead to faster delivery times.
- MFN (Merchant Fulfilled Network): Sellers handle storage, packing, and shipping directly, maintaining flexibility and control over their operations.
- FBA (Fulfillment by Amazon): Sellers send products to Amazon's fulfillment centers, where Amazon manages storage, packing, shipping, and customer service. This model provides access to Amazon Prime customers and can enhance sales potential.
- Direct Fulfillment: Vendors ship products directly to customers on behalf of Amazon, maintaining control over inventory and shipping processes
Seller Onboarding on Amazon with Increff’s Order Management System (OMS) Integration
Integrating your Amazon seller account with Increff's Order Management System (OMS) enhances efficiency and accuracy. Follow these steps for a seamless onboarding experience:
- Complete Amazon registration: Ensure your Amazon Seller account is active.
- Submit integration request: Download and complete the Amazon SmartConnect Integration Request Template. Share the updated file by creating a ticket on Increff's portal.
- Amazon processes the request: The Amazon team will configure your warehouse node, typically within 4 to 6 weeks.
- Update simulation link: Once the node is ready, update the simulation link as per the provided guidelines.
- Site verification: Amazon's operations team will verify the site and mark it as operationally ready.
- Go live: After successful verification, your warehouse node will be live for inventory sync and order processing.
For detailed onboarding information, refer to Increff's Amazon SmartConnect Seller Flex Onboarding Process
How Does Increff Help Sellers Manage Orders Across Amazon and Other Channels?
For most sellers, Amazon isn't the root of the problem. The real issue lies in inventory visibility and order orchestration, with Amazon being the first channel where those operational gaps start affecting sales. Increff's Order Management System is built to solve exactly this, with native support across Amazon's fulfillment models alongside Flipkart, Myntra, Ajio, and dozens of other channels through Increff's marketplace integrations.
Real-time inventory sync, in under ten seconds, gives every channel including Amazon an accurate view of available stock, so sellers expose 100% of their inventory without holding buffer stock to guard against overselling. For sellers on Seller Flex, Increff's Amazon SmartConnect integration handles the warehouse node setup, simulation testing, and go-live validation that Amazon requires, so warehouse teams aren't managing that handoff manually.
Intelligent order routing sends each Amazon order to the fastest-fulfilling location based on proximity, availability, and SLA requirements, cutting down on split shipments and missed delivery windows.
For sellers running hybrid fulfillment, vendor-managed inventory workflows let teams route long-tail SKUs directly to vendors without ever holding the stock themselves, useful for expanding catalog depth without expanding warehouse footprint. With 1,300+ marketplace, ERP, and logistics integrations and 99.5% SLA adherence across its customer base, the platform is built for sellers juggling Amazon alongside other channels, not treating it as the only sales surface.
Frequently Asked Questions
Q: Is selling on Amazon free?
A: Creating a seller account is free, but selling isn't Amazon charges referral fees per sale, plus optional Professional plan subscription fees and additional charges for shipping, storage, and advertising.
Q: Do I need GST to sell on Amazon?
A: Yes, in most cases. You'll need to provide your GST number during registration, unless you're selling GST-exempt products like books, in which case you can select that option instead.
Q: What's the difference between Easy Ship and Seller Flex?
A: Easy Ship involves handing off packed orders to an Amazon delivery agent for last-mile delivery, while Seller Flex plugs your own warehouse directly into Amazon's logistics network, giving more operational control while still using Amazon's delivery speed.
Q: What's the difference between MFN and Seller Flex?
A: With MFN, sellers store, pack, and ship orders entirely on their own, with full control but full responsibility for hitting Amazon's SLAs. With Seller Flex, sellers still manage inventory from their own warehouse but plug into Amazon's logistics network for last-mile delivery, combining warehouse control with Amazon-grade delivery speed.
Q: Can I sell on Amazon and other marketplaces or my own website at the same time?
A: Yes, and most sellers eventually do. The challenge isn't permission, it's keeping inventory synced across every channel so you don't oversell anywhere this is where an order management system becomes necessary rather than optional
Q: How does Increff's SmartConnect integration work with Amazon Seller Flex?
A: Increff's Amazon SmartConnect integration manages the technical handoff required for Seller Flex: submitting the warehouse node request, supporting Amazon's 4–6 week node configuration process, updating the simulation link, and validating the site before go-live, so the warehouse team isn't coordinating that process manually.