Google Ads vs Amazon Ads: Which is Better for E-commerce?

For products already listed on Amazon: almost always yes. Amazon Sponsored Products deliver the highest purchase intent of any advertising platform. Average ROAS of 3:1 to 8:1 is common for well-optimized Amazon campaigns. The investment in Amazon Ads typically pays back within 30 days for established products with good reviews (4.0+ average rating, 50+ reviews).

Google Shopping shows product image, price, and store name directly in Google search results. Setup: (1) Create a Google Merchant Center account and verify your website, (2) Upload your product catalog via data feed (manual or automated via Shopify/WooCommerce integration), (3) Link Merchant Center to Google Ads, (4) Create a Shopping campaign or Performance Max campaign. Shopping ads typically deliver 1.5–3x better ROAS than Search text ads for product-based e-commerce due to the visual product format.

Amazon Seller Central: you sell directly to customers as a third-party seller (3P). You control pricing, inventory, and fulfillment (or use FBA). Best for most businesses. Amazon Vendor Central: Amazon buys your products wholesale and sells them directly (1P — "Ships and sold by Amazon"). Requires invitation from Amazon. Vendor Central products often rank higher and have better conversion rates but you lose price control. Most businesses start as Seller Central; Vendor Central is typically reserved for large established brands.

Flipkart Ads are the Indian equivalent of Amazon Ads — reaching Flipkart's 450+ million registered users with high purchase intent within the marketplace. Flipkart Ads work well for products in electronics, fashion, and home categories where Flipkart has strong market share. Google Shopping Ads drive traffic to your own website and are better for brand building and customer ownership. For Indian e-commerce, the optimal stack is: Google Shopping + Search Ads for your DTC store, Amazon Ads for Amazon listings, and Flipkart Ads for Flipkart listings.