The Google Shopping tab was opened up earlier this year, and now Google is opening up Buy On Google with commission-free access. What is Buy On Google? Basically, it’s Google’s native checkout from product listings.
With this integration, merchants can streamline order management and payment, including PayPal and Shopify. If a user buys something through “Buy on Google,” PayPal and Shopify payment options will appear if they are available for that merchant. For merchants who utilize Shopify, inventory and order management from Buy on Google orders will go through Shopify directly.
For more info on this, check out the full post over at Search Engine Land.