Why Every Platform Is Building Its Own Advertising Platform for Merchants and Sellers

Why Every Platform Is Building Its Own Advertising Platform for Merchants and Sellers

A food delivery app was once used to order dinner. An ecommerce marketplace was used to buy products. A grocery platform helped customers purchase household essentials.

Now, these platforms are becoming advertising businesses.

DoorDash has DoorDash Ads. Uber Eats has Uber Eats Ads. Instacart has Instacart Ads. Amazon has Amazon Ads. Walmart operates Walmart Connect, while Etsy, eBay, Target and Kroger also offer advertising solutions for sellers and brands.

This shift is changing digital marketing.

Businesses no longer need to depend only on Google and Meta to reach potential customers. They can also advertise inside the platforms where people are already searching, comparing products, reading reviews and preparing to buy.

The big idea is simple:

The platform that controls customer attention and purchase intent can also sell access to that attention.

Why Are Platforms Building Their Own Advertising Networks?

The answer comes down to three valuable assets:

  1. Customer attention
  2. Shopping intent
  3. Purchase data

A platform that already helps customers discover restaurants, products or services has a major advantage. It does not need to create demand from zero. Customers are already using the platform with a specific purpose.

Someone opening DoorDash may already be hungry. Someone searching on Amazon may already want to buy a product. Someone browsing Instacart may already be planning a grocery purchase.

This makes advertising inside these platforms different from traditional awareness advertising.

The platform can place a sponsored restaurant, product or brand directly inside the customer’s buying journey.

1. Platforms Already Own the Customer Journey

Traditional advertising often works like this:

Ad impression → Click → Website → Product page → Checkout

Commerce platforms can shorten the journey:

Search inside platform → Sponsored result → Product or restaurant page → Purchase

This shorter journey can make advertising more relevant to merchants and sellers.

For example, a restaurant may not need to convince someone to order food. The customer has already opened a food delivery app. The restaurant only needs to become more visible at the right moment.

Similarly, a seller on Amazon may not need to explain why people should shop online. The customer is already browsing products. The seller needs to appear when the customer searches for a relevant product.

2. Purchase Intent Is More Valuable Than General Attention

Not all impressions have the same value.

A person watching an entertainment video may not be planning to buy anything. A person searching for “chicken biryani near me” or “wireless headphones” already has a stronger commercial intention.

Commerce platforms are attractive to advertisers because they operate close to the point of purchase.

Examples of high-intent searches

  • Best pizza near me
  • Grocery delivery today
  • Buy running shoes
  • Handmade birthday gift
  • Affordable hotel room
  • Organic skincare products
  • Fresh flowers delivery
  • Household cleaning products

When a platform understands what the customer is searching for, it can display relevant sponsored products, restaurants or offers.

This is why retail media and commerce advertising are becoming important parts of the marketing mix.

3. Platforms Can Use First-Party Customer Data

Platforms collect information about how users interact with their services.

Depending on the platform and its privacy practices, this can include signals such as:

  • Search behaviour
  • Product views
  • Restaurant searches
  • Shopping categories
  • Cart activity
  • Purchase history
  • Repeat orders
  • Location
  • Time of purchase
  • Engagement with offers

This data helps platforms understand what customers are interested in.

For advertisers, the benefit is that campaigns can be connected more closely to shopping activity. Instead of measuring only clicks or impressions, platforms may also provide information about orders, sales and return on advertising spend.

However, advertisers should still review each platform’s targeting, privacy rules, reporting limitations and audience policies.

4. Advertising Becomes an Additional Revenue Stream

A marketplace earns money through activities such as:

  • Commissions
  • Delivery fees
  • Subscription plans
  • Seller fees
  • Payment services
  • Premium memberships

Advertising creates another revenue stream.

The platform can earn from the transaction and also charge brands for visibility inside the marketplace.

This creates a powerful business model:

More customers create more transactions. More transactions create more data. More data improves advertising opportunities. More advertising creates additional revenue.

Advertising can become especially attractive because it uses digital placements that already exist inside the platform.

These placements may include:

  • Search results
  • Homepage sections
  • Product listings
  • Restaurant listings
  • Category pages
  • Sponsored recommendations
  • Display placements
  • Promotional banners
  • Shoppable formats

5. Merchants Need Visibility Inside Crowded Platforms

Many platforms have thousands or millions of sellers, restaurants and products.

Even when a merchant has a good product, customers may never see it.

A restaurant can have strong food quality but still receive fewer orders if it appears below competitors in a delivery app. An ecommerce seller can offer a competitive product but struggle if customers do not discover the listing.

Advertising helps merchants compete for visibility.

This is particularly important when:

  • Many businesses sell similar products
  • Customers compare several options
  • The platform has strong search demand
  • The merchant is new
  • The seller has limited reviews
  • The business is launching a new product
  • The merchant wants to promote a seasonal offer

Organic ranking still matters, but paid visibility can help businesses reach customers faster.

10 Platforms With Their Own Advertising Systems

1. DoorDash Ads

Best for: Restaurants, grocery brands and consumer products.

DoorDash Ads allows businesses to promote their products and restaurants within the DoorDash ecosystem.

Potential advertising opportunities include:

  • Sponsored restaurant visibility
  • Sponsored listings
  • Promotional placements
  • Increased discovery
  • Campaigns designed to generate orders

For restaurants, this is valuable because the customer is already using the platform to decide what to eat.

Official platform: DoorDash Ads 

2. Uber Eats Ads

Best for: Restaurants, grocery businesses and local merchants.

Uber Eats Ads helps businesses promote themselves inside the Uber Eats marketplace.

Restaurants can use advertising to increase visibility when customers are searching for food, comparing restaurants or browsing available offers.

The key advantage is that the advertisement appears inside an environment where the customer is already considering an order.

Official platform: Uber Eats for Merchants 

3. Instacart Ads

Best for: Grocery, household products, food brands and consumer packaged goods.

Instacart Ads is designed for brands that want to reach shoppers while they are searching for groceries and household essentials.

Advertising formats can include:

  • Sponsored products
  • Display advertising
  • Promotional placements
  • Shoppable formats
  • Product discovery campaigns

Instacart is especially relevant for brands that want to influence customers close to the grocery purchase.

Official platform: Instacart Ads 

4. Deliveroo Marketer Adverts

Best for: Restaurants and food delivery businesses.

Deliveroo offers advertising solutions that help restaurants increase their visibility within the platform.

Potential placements include:

  • Search results
  • Homepage carousels
  • Cuisine pages
  • Restaurant listings
  • Promotional areas

For restaurants, the main opportunity is to appear when customers are actively deciding what to order.

Official platform: Deliveroo Help Centre 

5. Amazon Ads

Best for: Ecommerce sellers, product brands and marketplace businesses.

Amazon is one of the clearest examples of a commerce platform becoming an advertising network.

Its advertising ecosystem includes:

  • Sponsored Products
  • Sponsored Brands
  • Sponsored Display
  • Product discovery campaigns
  • Brand visibility campaigns

Amazon advertising is powerful because customers often arrive with direct buying intent.

A seller can promote a product when shoppers are already searching for related products or browsing a category.

Official platform: Amazon Ads 

6. Walmart Connect

Best for: Retail brands and Walmart Marketplace sellers.

Walmart Connect offers advertising opportunities across Walmart’s shopping ecosystem.

These can include:

  • Sponsored search
  • On-site display
  • Retail media placements
  • Product promotion
  • Brand visibility campaigns

The platform connects advertising with retail shopping behaviour, making it relevant for consumer brands and sellers.

Official platform: Walmart Connect 

7. eBay Advertising

Best for: Marketplace sellers and product brands.

eBay Advertising helps sellers promote products within the eBay marketplace.

This can be useful for:

  • Increasing product visibility
  • Promoting listings
  • Supporting product launches
  • Competing in crowded categories
  • Reaching active marketplace shoppers

For sellers, the value comes from advertising directly where customers are already searching for products.

Official platform: eBay Advertising 

8. Etsy Ads

Best for: Handmade products, personalised gifts, vintage products and creative sellers.

Etsy Ads allows sellers to promote listings to shoppers searching for products on Etsy.

It can be useful for businesses selling:

  • Handmade products
  • Wedding gifts
  • Personalised products
  • Home décor
  • Crafts
  • Jewellery
  • Art
  • Vintage items

Etsy sellers often operate in highly competitive categories. Paid visibility can help a product reach shoppers who may otherwise discover competing listings first.

Official platform: Etsy Seller Handbook 

9. Target Roundel

Best for: Consumer brands and retail products.

Roundel is Target’s retail media business. It provides advertising opportunities for brands connected to Target’s shopping ecosystem.

Retail media platforms such as Roundel allow brands to reach customers through shopping-related placements and campaigns.

The key idea is that brands can advertise within a retail environment rather than relying only on external advertising channels.

Official platform: Target Roundel 

10. Kroger Precision Marketing

Best for: Grocery brands, food companies and consumer packaged goods.

Kroger Precision Marketing provides advertising solutions for brands that want to reach grocery shoppers.

It is especially relevant for:

  • Food brands
  • Household products
  • Grocery products
  • Consumer packaged goods
  • Retail promotions

Because grocery platforms understand shopping behaviour, they can offer advertising opportunities connected to product discovery and purchase activity.

Official platform: Kroger Precision Marketing 

How This Changes Digital Marketing

Google and Meta Are No Longer the Only Major Options

Google and Meta remain important advertising platforms, but commerce advertising creates another layer of opportunity.

A brand can now advertise across different stages of the customer journey.

Customer StagePossible Platform
General awarenessMeta, YouTube, TikTok
Search intentGoogle, Bing
Food ordering intentDoorDash, Uber Eats, Deliveroo
Grocery shopping intentInstacart, Kroger
Product buying intentAmazon, Walmart, eBay, Etsy
Retail shopping intentTarget Roundel, Walmart Connect

This means marketers should select platforms based on where the customer is making the decision.

The Strategy Should Match the Customer’s Intent

A restaurant may benefit from advertising on a food delivery platform because the customer is already looking for a meal.

A handmade gift seller may benefit from Etsy Ads because shoppers are already searching for creative products.

A grocery brand may find Instacart or Kroger relevant because customers are planning their shopping baskets.

An ecommerce brand selling products on Amazon may need Amazon Ads before spending heavily on external traffic.

The right question is not:

“Which platform has the most users?”

The better question is:

“Which platform has customers who are already close to buying what I sell?”

What Merchants Should Consider Before Advertising

1. Understand the Real Cost

Do not judge a campaign only by clicks.

Track:

  • Advertising spend
  • Orders
  • Revenue
  • Cost per order
  • Average order value
  • Profit margin
  • Repeat purchases
  • Refunds
  • Discounts
  • Platform commissions

A campaign can generate sales and still lose money if the margin is too low.

2. Improve the Product or Restaurant Listing

Paid traffic cannot fix a weak listing.

Before advertising, improve:

  • Product images
  • Restaurant photos
  • Titles
  • Descriptions
  • Reviews
  • Menu presentation
  • Pricing
  • Delivery information
  • Product benefits
  • Offers
  • Availability

The advertisement may generate the click, but the listing must generate the order.

3. Start With One Clear Objective

Possible campaign objectives include:

  • Increase orders
  • Launch a new product
  • Promote a seasonal offer
  • Increase visibility
  • Clear inventory
  • Acquire new customers
  • Promote a high-margin product
  • Increase repeat purchases

Avoid running campaigns without knowing what success means.

4. Test Before Scaling

Start with a controlled budget.

Test:

  • Different products
  • Different offers
  • Different images
  • Different titles
  • Different audiences
  • Different placements
  • Different campaign objectives

Then increase spending only after identifying what produces profitable results.

The Future: Every Marketplace May Become a Media Network

The direction is becoming clear.

Food delivery apps are selling visibility to restaurants. Grocery platforms are selling access to shoppers. Marketplaces are selling sponsored product placements. Retailers are building media networks around their shopping data.

This creates a new category of marketing often called retail media or commerce media.

The platform is no longer only a place where transactions happen. It is also becoming a place where brands compete for attention before the transaction happens.

The future customer journey may look like this:

Search on a marketplace → See sponsored product → Read reviews → Compare options → Purchase → Receive recommendation → Purchase again

Every stage creates a potential advertising opportunity.

Final Thoughts

The rise of platform advertising is not accidental. These businesses already control valuable parts of the customer journey.

They know:

  • What customers search for
  • What products they view
  • What restaurants they consider
  • What categories they buy
  • When they purchase
  • Which offers attract attention
  • Which products convert

That makes their platforms valuable to merchants, sellers and brands.

For marketers, the opportunity is to stop thinking only in terms of Google Ads and Meta Ads. The next growth opportunity may exist inside the platform where the customer is already ready to buy.

A food delivery app is no longer only delivering food. A marketplace is no longer only processing orders. These platforms are becoming advertising networks because they control customer attention, shopping intent and purchase data.

The winning strategy will be to match the right product with the right platform at the right moment in the customer’s buying journey.

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