Google’s same-day delivery service launches for Bay Area shoppers

Google Shopping Express (s GOOG), the tech giant’s same-day delivery service, is now officially open for business — to shoppers in the Bay Area, at least.

Back in March, Google said it had started piloting the service with select shoppers. In a blog post Wednesday, the company said it was opening up the service to people in its delivery zones, which include San Francisco and San Jose.

Through the service’s site and mobile apps, consumers will be able to shop chain and local retailers and receive their purchased items on the same day.  Some participating retailers include Raley’s Nob Hill Foods, Staples, Target, Toys“R”Us/Babies“R”Us, and Walgreens. Prices online are the same as those in-store and, for now, users can get six months of free delivery (but, according to San Jose Mercury News, it will eventually cost $5 for a pick-up).

As we’ve covered before, the same-day delivery space is getting pretty crowded. Amazon (s AMZN) and eBay (s EBAY) offer local, same-day deliver services (in limited markets), as do startups like PostMates, Deliv, TaskRabbit and WunWun. For Google, the effort will help it take on Amazon in local commerce, as well as more closely monitor consumer behavior and remain relevant as the online and offline increasingly converge.