Marketplace SEO Guide: How to Succeed on Marketplaces

Marketplace search engine optimization (SEO) improves how easily your products appear in organic search results on marketplace websites like Amazon, Etsy, and eBay. Unlike traditional SEO, which focuses on Google and other external search engines, marketplace SEO is shaped by each platform’s search behavior and discovery algorithm. 

More than half of online shoppers start their product searches on Amazon, according to a 2025 Jungle Scout report, making visibility in marketplace search results critical. Products that rank lower may never be seen, reducing traffic to your listings and your ability to drive sales.

Learn which ranking factors influence visibility and ways to improve how your products appear across major marketplaces.

What is marketplace SEO?

Marketplace SEO is the process of optimizing your product listings so they rank higher in search results on marketplace websites like Amazon, Etsy, eBay, and Walmart Marketplace. A marketplace SEO strategy will span several areas of work, similar to traditional ecommerce SEO, including optimizing listing content with keywords and building strong quality and conversion signals. 

Major online marketplaces have become essential sales channels for many brands. For Razvan Romanescu, cofounder and CEO of Underlining, having a presence on Amazon is a baseline requirement. If your product is missing, hard to identify, or poorly presented, a competing listing can capture that demand. “Amazon’s a catch-all net,” he says on the Shopify Masters podcast. “If you don’t list your products on Amazon, a competitor will be eating into all your keywords and pretty much absorbing all your hard effort."

While each marketplace has its own search algorithm, most prioritize two core factors: the relevance of the listing and its performance. To determine relevance, algorithms evaluate how a listing’s keywords, attributes, and content align with search terms. To measure performance, algorithms look at click-through rate, conversion rate, and reviews. These signals indicate how likely the listing is to generate a purchase.

For example, Amazon’s search system evaluates factors like keyword relevance, listing content, sales performance, pricing, fulfillment speed, and customer experience signals like reviews. 

Other platforms, such as eBay and Etsy, follow the same general approach. eBay’s Best Match algorithm uses similar inputs, including search relevance, listing quality, price, seller performance, and shipping terms. 

Etsy’s search system considers keyword relevance, listing quality, customer service, and engagement signals, including how often shoppers click on and purchase an item. 

How to succeed at marketplace SEO

1. Assess top-ranking listing pages
2. Audit your listings for completeness
3. Strengthen keyword relevance
4. Build reviews and trust signals
5. Improve listing engagement and conversion

Here are a few ways to improve how your products rank on marketplaces.

1. Assess top-ranking listing pages

Audit top-ranking listings to understand what’s working in your category. Instead of guessing what to improve, use top results as a reference point to identify gaps in your own listings.

Focus on the following:

• Listing content. Review titles, images, and descriptions to find patterns in keywords, structure, and messaging. 

• Pricing. Compare your pricing to similar products and understand how your offer is positioned within the market.

• Shipping options. Look at delivery speeds, fulfillment options, and stock consistency to understand customer expectations for top listings.

2. Audit your listings for completeness

Marketplace algorithms rely on complete, structured data to understand and rank your listings. Incomplete or inconsistent listings can limit visibility, even if your product is relevant to a search. 

To maximize visibility, review your existing product listings for missing or incomplete elements, such as:

• Titles. Use clear, descriptive, and keyword-rich titles that match how your customers search. Include your brand name as well, so that shoppers already familiar with your brand can find your products.

• Images. Include high-quality visuals, such as product, lifestyle, and use-case images to help shoppers evaluate options quickly.

• Product descriptions. Provide detailed information about features, materials, and use cases. Include your brand name as well. 

• Categories and attributes. Assign accurate classifications that help marketplaces match your product to relevant searches. These fields use pre-defined values.

Completing all available fields helps marketplaces better understand your product and increases your chances of appearing in relevant search results.

If you use Shopify, Marketplace Connect can help ensure product details, images, and attributes stay consistent across marketplaces by syncing listings, inventory, and updates from one central admin. You’ll still need to tailor your listings for each marketplace’s search behavior, including how titles, keywords, and attributes are structured.

You can also use Shopify’s sales channels to manage products and orders from a centralized Shopify admin, rather than from each platform you list on separately.

3. Strengthen keyword relevance 

Keyword relevance means using the right words in your listing to match how shoppers search on a marketplace. You’ll need to include relevant keywords in your product titles, descriptions, and key attributes.

Start by doing marketplace-specific keyword research to identify which keywords shoppers use on the platform. Enter your product name into the search bar and review autocomplete suggestions to find common long-tail keywords (longer, highly specific search terms). Then, analyze top-ranking listings to see how competitors structure their titles and descriptions using those keywords. 

Next, review related searches and filters, which can reveal secondary terms to include, as well as common product attributes (such as size, color, or material) that shoppers search for. 

Autocomplete suggestions for the search term "dog poop bags" in Amazon.

Once you’ve figured out your keywords, incorporate them into your product titles and descriptions. 

For example, a detailed title like “ILIA - Super Serum Skin Tint SPF 40 | Non-Comedogenic, Vegan, Lightweight to Help Against Blue Light, + Pollution while Hydrating, Smoothing, + Refining (Kokkini ST12, 1 fl oz | 30 ml)” is more searchable than a generic title like “skin tint.”

4. Build reviews and trust signals 

Marketplace rankings also rely on trust signals, including user-generated content like reviews and ratings. Products with strong reviews and good ratings are more likely to rank higher because they indicate quality, attract clicks, and drive conversions. One study found that products rated 4.3 stars or higher held 73% of the top Best Seller Rank positions on Amazon. 

To get more reviews, encourage customers to leave reviews through post-purchase emails and other follow-up messages, and focus on delivering a strong customer experience that naturally leads to positive feedback.

5. Improve listing engagement and conversion

Marketplace algorithms evaluate not only what your listing says but how shoppers interact with it. Similar to traditional SEO efforts for ecommerce sites, where pages with high engagement tend to rank higher, listings that attract clicks and convert into purchases are more likely to rank higher over time.

That means you need to understand your product’s competitive positioning within the marketplace. For example, if your price point is significantly higher than competitors’, your click-through rate may suffer unless you justify the premium with excellent ratings, ample positive reviews, and competitive fulfillment options. 

Finally, ensure your stock is accurate. If your stock isn’t properly synced across sales channels, shoppers may purchase items that are actually out of stock, leading to a poor customer experience and negative reviews. Marketplace Connect keeps listings and inventory aligned across channels from one central admin, reducing the risk of availability mismatches at the time of purchase.