Author: Elliott Rebuck Apr 18, 2023 6 Min READ

Guide to Marketplace Integrations for Ecommerce Brands and 3PLs

6 Min READ
Guide to Marketplace Integrations for Ecommerce Brands and 3PLs


In today's fast-paced ecommerce landscape, brands and third-party logistics (3PL) providers need to integrate their systems with various marketplaces to reach a wider audience and increase sales. However, managing multiple marketplaces can quickly become overwhelming without proper integration. That's where ecommerce marketplace integrations come in. This guide will explore the benefits of marketplace integrations, the key features to look for, and how Extensiv Integration Manager can help ecommerce brands and 3PLs streamline their operations and boost their bottom line. Whether you're just starting or looking to expand your business, this guide will provide the tools and knowledge to quickly and easily set up popular marketplace integrations, connect with new customers, and grow your business.

What is a Marketplace Integration?

A marketplace integration is a software solution that connects a brand's ecommerce software to third-party marketplaces, such as Amazon, Walmart, or eBay, using an API connection. It streamlines your fulfillment process by automating orders, inventory, and tracking information across multiple channels.

Optimize your fulfillment tech stack with Extensiv

For brands and merchants, marketplace integration simplifies the task of selling products on multiple channels by eliminating the need to manually manage each marketplace. By integrating your ecommerce fulfillment stack with marketplaces, you can expand your reach, increase sales, and improve customer satisfaction.

For 3PLs and warehouses, marketplace integration enables you to offer value-added services to your clients, such as multichannel fulfillment, without the need for manual data entry. In addition, by integrating with marketplaces, you can provide your clients with a streamlined and efficient way to onboard new customers and manage their ecommerce operations, leading to higher customer retention and increased revenue.

Why Your Business Needs Ecommerce Marketplace Integrations

As more consumers shop across various channels, an omnichannel strategy is crucial for businesses to thrive in the competitive ecommerce landscape. That's why integrating with marketplaces is becoming increasingly essential. Here are some key reasons why your business needs a marketplace integration:

Automated Order Processing

Automating your order processing can significantly reduce the time and effort spent on manual data entry and order management. This is especially important for businesses with a high volume of orders, as manual processing can result in errors, delays, and increased labor costs. A marketplace integration enables you to automatically send and receive orders, update inventory levels, and generate shipping labels, streamlining your operations and increasing efficiency.

Increased Sales Performance

Marketplace integrations allow brands to expand their reach and streamline how they sell on multiple channels, including top ecommerce marketplaces like Amazon and Walmart. By diversifying your sales channels, you can reach a wider audience and increase sales performance. A marketplace integration can also help you track sales performance across different channels, enabling you to make data-driven decisions to improve your sales and ecommerce marketing strategies.

Improved Customer Experience

Marketplace integrations can improve the customer experience by providing accurate and up-to-date product information, inventory levels, and shipping information. Customers can easily track their orders and receive updates in real time, which can lead to higher satisfaction and repeat business.

Considerations for 3PLs

For 3PLs and warehouses, marketplace integrations are equally important. By integrating with multiple sales channels, 3PLs can quickly onboard brand and merchant customers to expand their customer base and increase revenue. Marketplace integrations can also help 3PLs manage inventory across multiple channels, reducing the risk of overselling or stockouts. Additionally, marketplace integrations can enable 3PLs to provide real-time inventory and order tracking to their clients, enhancing their service offerings and building customer trust.

Marketplace Integration Features to Look For

When choosing a marketplace integration, there are a few must-have features to look out for. These features can make or break the integration's effectiveness and ability to meet your business's needs. Here are some of the key features to keep in mind when evaluating marketplace integrations:


A marketplace integration must be able to pull and process orders from multiple channels, including Amazon, eBay, Walmart, and more. Extensiv Integration Manager automatically imports orders from all major marketplaces and can send them to your order management system (OMS), warehouse management system (WMS), or shipping platform for easy processing.


Keeping track of inventory levels across multiple channels can be a headache without proper integration. Extensiv Integration Manager can sync your inventory across all your sales channels, ensuring you never oversell and run out of stock.


As soon as an order is shipped, the customer expects to receive tracking information. With Extensiv Integration Manager, tracking numbers are automatically assigned and sent to the marketplace, making it easy for your customers to keep tabs on their orders.


Your business is unique, and your marketplace integration should be too. Look for a solution that allows for custom rules and settings, so you can tailor the integration to meet your specific needs.


When choosing a marketplace integration, be mindful of expensive solutions that may offer features you don't need. While some iPaaS (Integration Platform as a Service) providers may have dynamic pricing capabilities, evaluating your business needs is important to avoid overspending on unnecessary features.


Your business will likely grow and evolve over time, so choosing a marketplace integration that can scale with your needs is essential. Look for a solution to handle high order volumes and support multiple sales channels and warehouses.

Extensiv Integration Manager offers all of these features and more, making it a comprehensive solution for ecommerce brands and 3PLs looking to streamline their operations and maximize their sales potential.

The Best API Marketplace Integrations for Ecommerce Brands and 3PLs

Marketplace integrations offer ecommerce brands and 3PLs the opportunity to create new revenue streams and scale their businesses. In addition, many merchants use them to streamline how they sell on Amazon and other popular marketplaces. For 3PLs, this also means attracting and onboarding new customers more quickly. Here are some of the most popular and essential marketplace integrations for ecommerce brands and 3PLs:

Amazon Direct Fulfillment

Amazon's Direct Fulfillment program allows Amazon vendors to drop ship products. When a customer orders an item on Amazon, the order is sent to the vendor, who fulfills it and sends it directly to the consumer. By selecting Amazon's Direct Fulfillment solution, vendors can have Amazon purchase wholesale, market their products, and list them online as "Sold by Amazon." The vendor then ships individual orders directly to consumers, eliminating the need to send items in bulk to Amazon warehouses.

Amazon Seller Central  

Amazon Seller Central is an online platform that allows individual sellers to list and sell their products on Amazon's marketplace. It provides access to millions of customers and offers three options for order fulfillment: Merchant (in-house) fulfillment, Third-Party fulfillment service, or Fulfillment by Amazon (FBA). In addition, sellers are responsible for managing their inventory and pricing.

Walmart Marketplace

Walmart Marketplace allows third-party sellers to list their items on Walmart's website, providing access to over 100 million unique visitors each month. With Walmart's increasing popularity among buyers and a low barrier to entry for smaller sellers, it's becoming a worthwhile consideration as a new sales channel for ecommerce brands.


Wayfair is the ultimate home decor and furnishings destination, offering a vast selection of products to suit every budget and style. Wayfair's commitment to exceptional customer service and innovative technology empowers customers to create their dream homes. The online marketplace is revolutionizing the online shopping experience using data-driven insights and employee creativity.


Etsy is a global online marketplace where buyers and sellers connect to buy and sell unique and handmade goods. Each item on Etsy is listed and sold by a seller who manages their own orders and inventory. As a seller on Etsy, integrating your online store with powerful shipping software and syncing inventory and order tracking information is essential for managing your growing store.


Ebay is a global online marketplace where buyers and sellers can engage in business transactions. It connects people from over 190 countries and provides a platform to sell everything from cars and clothing to electronics and collectibles. Ebay enables individuals and businesses of all sizes to create economic opportunities and reach a global audience.

Using a cloud-based integration solution like Extensiv Integration Manager, brands and 3PLs can streamline their marketplace integrations across all these platforms. By automating their order processing, multichannel inventory management, and tracking, they can save time and reduce the risk of errors.


Leverage Extensiv for Your Ecommerce Marketplace Integration Solution

Extensiv Integration Manager provides an affordable, efficient, and streamlined approach for brands/merchants and 3PLs to manage their marketplace integrations and automate workflows to save time and reduce errors. Here’s how it works:  

  1. Sales Order Download: To facilitate efficient processing and order fulfillment across all ecommerce systems, Integration Manager gathers crucial sales order data from the marketplace, such as the order ID, customer information, product details, pricing, payment information, shipping method, order status, and any custom fields.
  2. Sales Order Upload: Sales order data is uploaded to the order destination, whether it's an OMS, WMS, or shipping platform. This step helps to ensure accuracy and real-time synchronization across all systems, ultimately saving time and streamlining the order fulfillment process.
  3. Shipment Tracking and Inventory Level Download: After the order is shipped and processed, the order destination provides Integration Manager with shipment tracking information and updated inventory levels.
  4. Shipment Tracking and Inventory Level Upload: Integration Manager ensures that all platforms are updated with the order's status by synchronizing the shipment tracking information and inventory levels with the marketplace.

Extensiv Integration Manager is a simple and straightforward solution with low cost, making it an attractive choice for businesses of any size. Additionally, its exceptional customer support makes it easy for companies to start using marketplace integrations quickly and efficiently.

Furthermore, Extensiv Integration Manager is designed to help ecommerce businesses grow. As businesses expand, they can leverage Extensiv’s other software systems to build a custom solution or connect with a trusted 3PL partner to further streamline and optimize their operations. 

Overall, Extensiv Integration Manager offers a reliable and efficient solution to manage ecommerce marketplace integrations, reduce errors, save time, and increase sales, ultimately positioning businesses for success in the competitive ecommerce industry.

FREE DOWNLOAD The Merchant Guide to Integration Platform as a Service Discover robust, scalable, and user-friendly integration solutions.    

Marketplace integration FAQs

Why is marketplace integration important?

Marketplace integration is important for brands and 3PLs because it enables them to reach a larger audience, automate order fulfillment, and increase operational efficiency. By connecting their ecommerce platforms with popular marketplaces, brands, and 3PLs can manage all their sales channels in one place and reduce manual data entry and processing errors. 

How do you use a marketplace integration?

To use a marketplace integration, businesses must first choose a marketplace platform and set up an account. They can then connect their OMS, WMS, or shipping platform to the marketplace using a marketplace integration tool like Extensiv Integration Manager, which automates the exchange of orders, inventory, and tracking information between the two systems. 

What are the common challenges of marketplace integration?

Integrating with marketplaces can be complex and time-consuming, requiring resources and technical expertise to manage. Using an iPaaS service provider like Extensiv Integration Manager makes it easier to manage integrations than native integrations and plugins, hiring in-house employees and consultants. In addition, iPaaS services provide a simplified approach to integration, with pre-built connectors, intuitive mapping tools, and ongoing support to help brands and 3PLs manage their integrations more efficiently. 

Written By:
Elliott Rebuck

Since 2007, Elliott has been immersed in ecommerce, warehousing, and omnichannel fulfillment. With 14 years of in-house experience at pioneering skate, surf, and snow brands, he is now a Marketing Manager at Extensiv, committed to empowering brands and 3PLs with cutting-edge technology for enhanced efficiency and growth.

Latest Insights

May 19, 2024 6 Min READ
May 09, 2024 6 Min READ
May 07, 2024 8 Min READ