Google Shopping is one of our favorite ecommerce marketing platforms. It gives retailers access to millions of shoppers, but also provides tons of controls to refine audiences for highly targeted campaigns.
Getting started, however, can seem daunting even to seasoned digital marketers. The main culprit for this confusion is the multi-leveled entry process. Before you can start selling on Google Shopping, you'll need to activate accounts on two distinct platforms: 1) Google Merchant Center and 2) Google Ads (formerly Adwords).

You'll need a Google login for this. Most people use a gmail account to manage this entire structure. If you go that route, you can choose to either use your personal gmail or to create an account specifically for use with this account, i.e., mycompany@gmail.com. Some people prefer this format because they're able to share it with other team members for access.
Once you've established your account access protocols, you can either jump right into it, or you can establish optimized processes for your campaigns from the start. We prefer the latter, and the way we do it for our customers is by using an all-in-one Google Shopping solution (shameless plug, sure, but facts are facts) that allows us to:

The process of mapping a feed and assigning the correct product category for Google’s taxonomy doesn’t have to be a harrowing experience.
What I find is that the sellers who try to do this manually or with a shopping cart-to-Google app, tend to get discouraged by the high number of feed errors and warnings. Then, after a ton of work to get this sorted, their feeds are still just good enough to pass compliance. Not good enough to compete.
We recommend using a trusted Google Shopping integration that allows you to modify incoming product data at scale.
To set up a Google Merchant Center feed, Google and GoDataFeed have provided documents outlining the process:
The step-by-step process of submitting your feed will differ by the method you’ve chosen.
This requires that you have a flat file (csv, txt, xml) of your product data. You will submit by uploading that file into Google, scheduling a fetch or by placing it into a Google Sheets page that Merchant Center can access.
This has obvious drawbacks.
For one, the data being submitted will be static. You’ll have almost no ability to manipulate attributes.
And there’s also the issue of limited submissions. Once daily is the most often your data will be pulled. That’s just not enough to keep your data and inventory fresh and accurate.
The Content API for Shopping allows apps to interact directly with the Merchant Center platform, vastly increasing the efficiency of managing large or complex Merchant Center accounts. The Content API for Shopping can be used as an input source for product data in Merchant Center, directly delivering your data as it is updated on your site.
This is a much better option for data freshness and inventory accuracy. But it still has drawbacks.
The main problem with this is that it’s little more than a highly efficient data dump. Whatever is on your store is what gets pushed into Merchant Center. Again, you have very little control over how your product ads are presented.
So what’s the better option?
You knew it was coming. Here it is. Product feed automation tools not only simplify the Merchant Center integration (like Content API) but they also add a layer of data controls.
With product feed automation tools you can create custom attribute templates. What do we mean by that? Here’s an example… If you’re a shopper looking for size 6 strappy red sandals, what’s a better product ad title?
1) Lunna or 2) Women's Mia Lunna Platform Ankle Strap Sandal, Size 6 M - Red
Option 2 is obviously the richer product ad title.

But you wouldn’t want that as your product page title. That’d be really long and too specific. Which is why you DO NOT want to push your store data -- UNMODIFIED -- into Merchant Center.

Once you have completed the steps outlined to submit your Google Shopping feed, Google will take a few days to approve it.
Make sure to monitor the health of your feed. Check in regularly to ensure you have no errors or warnings that would prevent your products from being listed. If you are submitting manually, you can do this on Merchant Center.
If you use GoDataFeed's Google feeds, the app will monitor your feeds and alert you if issues arise, but it's still good advice to log in occasionally to assess feed health.
Google Ads is the backbone of the Google Shopping program. Unlike traditional ads on Google Ads, Google Shopping uses Product Ads. Product Ads do not require keywords, but do require a connection to your product feed.
While you can create Product Ads in any existing campaign, for maximum control on your ad spend, I recommend creating a new campaign.
Before you can launch a campaign, you’ll need to link Merchant Center to Google Ads. Do that now if you haven’t already done so.
In your Google Ads account, click on All campaigns in the left menu. Then select the Campaigns tab. Finally, click the blue plus icon. This will open the Select campaigns settings page.

If you chose Product shopping ad types, this will launch your campaign. If you chose Showcase shopping ad types, this will load the Create an ad page.

Run a free feed audit and see which of your titles are matching queries you'd never choose to bid on.