Your Google Shopping feed can get Microsoft Shopping off the ground without another catalog rebuild. The expensive mistake is importing the campaign around it: Google bids, product groups and priorities included. I have done that version. It spends fast and teaches you very little.

Here is the split that holds up: import the feed, rebuild everything else. Microsoft lays out the sequence as claim the domain, create the Merchant Center store, upload or import the catalog, then build the Shopping campaign. Stores and offers must clear review before ads serve. That is worth waiting for. Your Google campaign structure is not.

Why does Microsoft Shopping need its own build?

Bing is not Google with fewer clicks. The audience skews older and higher income, search terms skew longer and more literal, and fewer bidders compete for the same product. The same SKU can work on Google at a $1.20 click and lose money on Microsoft at that bid, or the reverse. One breakdown says 72% use Google Import, but most clone and never touch the account again. That is how a convenient starting point becomes an operating model.

The bid difference alone deserves attention. One analysis puts the ecommerce CPC gap around 32% ($0.88 versus $1.29) and cites Merkle Q4 2025 data at 33% lower CPC than Google. Those are not bids to copy into your account. They are a reason to stop assuming Google’s auction prices apply.

I treat Microsoft as a second store opening. Reuse the inventory list; set the prices on the shelf for this store. If the catalog needs work before import, start with my feed optimization walkthrough. For the campaign itself, keep one rule in view: the feed carries over and almost nothing else should.

Step 1: How do I import the feed without importing the campaign?

Start in Microsoft Merchant Center, not the campaign screen. Claim the domain, create the store, connect the catalog and wait for review to clear. Google Import can bring your approved Google product catalog across without making you rebuild it by hand. I used to rebuild feeds by hand on principle. I was wrong. Import first, inspect second.

Once it lands, check the store and catalog connection. Microsoft also tells you to review budgets, bidding strategy, product groups, country settings, priority, negatives, tracking and import warnings. Use that as a warning list, not permission to keep imported campaign settings. Confirm the catalog is attached to the right store, then check that country and currency match where you ship.

Open feed diagnostics before building a campaign. Work through titles, prices, images, availability, URLs, feed labels and disapprovals. A campaign cannot rescue an offer that is not approved. Feed first, campaign second saves you from tuning bids while the products you meant to sell are still under review.

What can I keep from Google?

GTINs, brand, MPN, availability, price, links and image links can transfer cleanly if they were clean in Google. Custom labels can transfer too, and you will need them for the margin split in Step 3. What does not transfer is Google’s approval decision. Run the Microsoft disapproval report on day one and fix the affected rows rather than assuming the next Shopify sync will sort them out.

Which feed attributes deserve another look?

Bing shoppers often search more literally. Titles that won on Google through keyword stuffing can look noisy here. I would check the basics in batches:

Do not edit every title one at a time while trying to launch. Each edit can trigger up to three days of re-review. Batch the changes, check the diagnostics, then move on.

Step 2: Will purchase tracking show revenue before I spend?

Shopping without revenue tracking is an expensive product catalog. Microsoft needs a sitewide UET base tag and a separate conversion goal. On Shopify, set up the Purchase goal, check its /thank_you URL match and pass variable revenue back. Without purchase value, Microsoft can count orders but cannot calculate ROAS from them. That leaves you trying to judge profitable products by order volume alone.

Before launch, use the UET Tag Helper and check for Tag active status. Then verify that a purchase fires with the right value and that the goal is linked to the campaigns. I also look for three familiar problems: consent banners that prevent the tag from loading, a Shopify Custom Pixel sandbox rejection, and duplicate UET tags that inflate counts. If a test fails, fix the implementation before asking a bidding strategy to work around it. Without a linked conversion goal, Target CPA and Maximize Conversions have nothing useful to optimize toward.

No active UET and verified purchase value, no Shopping launch. That is less exciting than choosing a campaign name. It is also more useful.

Step 3: Should I start with Standard Shopping or Performance Max?

Start with Standard Shopping. You can see the product groups, mine search terms and apply negatives. That visibility is the point of building Microsoft separately rather than letting an import make the decisions for you.

Performance Max may earn a slot later. Microsoft cites a 39% higher conversion rate for PMax than Standard in US February–April 2025 data, but an average does not tell you what its learning period will cost on your volume. The overlap rule also changed in May 2025: PMax no longer automatically takes priority over Standard Shopping; the campaign with the higher Ad Rank wins.

That makes a cleaner test possible. Put hero SKUs in Standard, where you want control. If Standard becomes stable, give PMax a separate long-tail product slice and its own budget. Standard first for control, PMax second for reach. Do not make both campaigns fight over the same products and budget, then call the resulting platform ROAS a test.

How should I divide product groups?

Your Google structure may group products by category: Shoes, Jackets, Accessories. On Microsoft, I would start with the money: heroes with margin to scale, mid-range products to hold, and low-margin or one-hit accessories to cap. Use custom_label_0-4 for margin and bestseller tags so the split survives the next feed sync. My Google Ads for ecommerce breakdown goes deeper on mapping those segments to ROAS targets.

Say you spend $20k a month. Three groups with distinct margin profiles give you clearer bid decisions than twelve category groups managed against one blended goal. Group products by the decisions you need to make, not just by the headings in your storefront menu.

Step 4: What should I bid instead of my Google bids?

Google bids reflect Google’s competition. Microsoft’s auction has fewer advertisers bidding on the same product, and the retail comparison above puts a $1.29 Google click near $0.88 on Microsoft. That does not mean every Microsoft click costs $0.88. It means copying a Google bid is a poor opening move.

I start 15–30% below the Google bid, consistent with guidance to lower bids 15–30% after import, then use the first two weeks of search-term and performance data to decide where to push. Fewer bidders can mean a lower clearing price. Start with room to learn rather than paying for a position you may not need.

If Standard campaigns overlap, set priorities deliberately: keep the hero margin group in contention and the catch-all low priority as a backstop. Begin with Manual CPC or Maximize Clicks with a max CPC cap while UET builds history. Move winners toward Target ROAS once purchase volume is steady. Split the Audience Network into its own campaign from day one so cheaper, lower-intent clicks do not blur search ROAS. Set Microsoft bids for Microsoft traffic. The feed import did its job; it does not need to set your price too.

Step 5: Which search terms should I block?

Shopping campaigns do not give you keywords to bid on in the usual way. The search-term report shows what matched; negatives let you cut the waste. Pull the report weekly for the first month and sort by spend, not clicks. Look for terms such as free, used, DIY fixes and job searches, as well as sizes you do not stock. Add precise negatives for queries that cannot sell the product.

Check the scope before applying them. An account-level negative copied from Google can starve a hero product you meant to scale. Review the affected product groups rather than dropping an old list into the new account and walking away.

Since March 2026, Microsoft has offered self-serve Performance Max negatives, including lists, for Search and Shopping inventory. Use them where they fit, then check Reports > Product ads > Product negative keyword conflicts report. It flags negatives that block products. Mine weekly, negate precisely and check for conflicts before blaming Bing for low impressions.

Step 6: Is LinkedIn profile targeting worth adding?

Microsoft lets you layer LinkedIn profile targeting for company, industry and job function onto search and Shopping traffic through Demographics, with bid adjustments from -90% to +900%. It is a useful extra lever for higher-ticket products, not a reason to raise bids across the board.

I would observe first and adjust second. Watch two weeks of results, find the profiles that actually buy, then consider a +50% to +200% adjustment for those profiles instead of increasing the base bid for everyone. Let observed buyers earn the bid increase. A targeting option is not evidence that a particular job function wants your SKU.

What should I check in the first 30 days?

Run the first month in order. Each week answers a different question; do not rush to a new campaign type while the feed or purchase value is still wrong.

  1. Week 1: Does the plumbing work? Confirm Merchant Center approval, an active UET tag, purchase value and spend attaching to revenue. Mine search terms and remove obvious waste.
  2. Week 2: Which bids deserve to move? Raise groups with impressions and efficient ROAS. Cut groups spending without adding to cart. Run the negative keyword conflict report so you know you have not blocked your own heroes.
  3. Week 3: Is the structure stable enough to test? If Standard is steady, try PMax on a separate long-tail slice. Compare incremental orders rather than trusting platform ROAS alone.
  4. Week 4: Is this bringing in worthwhile orders? Judge incremental conversions and CRM quality, not platform conversions alone. If Bing brings orders Google would not have caught at a blended CPA you can live with, keep scaling.

That is the report I would want from a manager: what sold, what wasted money, what changed and whether the extra channel earned its place. Not a slide showing that clicks went up.

Should I run it myself or hand it over?

Doing it yourself means handling the setup, then keeping up with feed triage, UET checks, search-term mining, bid moves and conflict reports. Skip that maintenance and small mistakes linger: a disapproved offer, a negative blocking a hero product, or a PMax test spending before you understand what Standard was doing. One ecommerce brand grew revenue without raising budget after structural cleanup. The lesson for Microsoft is the work, not a promise that the same result will repeat on thinner data.

If you hand it over, ask whether the team rebuilds the campaign or merely mirrors Google. groas runs Google, Bing and ChatGPT ads for a flat $1,499 a month, with bids, budgets and negatives worked around the clock, actions logged and a named strategist accountable for direction. That is a better fit for this job than a percent-of-spend manager who leaves imported bids in place. You need someone paid to question the old setup, not preserve it.

Today, do the first sequence: import the feed only, set an initial Microsoft bid 20% below your Google bid, and verify one purchase with value in UET before you launch. Everything else can wait. Feed yes, Google bids no. Rebuild the rest and give Microsoft a chance to earn its own budget.