How do Smart Shopping campaigns work?

Smart Shopping campaigns optimize toward a retailer’s business goals through the use of machine learning across Google’s suite of ad networks. This drives performance, simplicity, and reach.
Smart Shopping campaigns optimize toward a retailer’s business goals by providing manual control over performance optimization. This drives simplicity, performance and reach
Smart Shopping campaigns provide the options of adding manual input and advanced machine learning.
Smart Shopping campaigns give you complete control over the campaign setup, ad, and bidding.