If you run an eCommerce business, chances are you’ve considered advertising on Google, Facebook or Instagram.

But where should you put your budget? Is Google Ads better for generating sales? Is Meta the stronger choice for finding new customers? Or do you need both?

The honest answer is that it depends.

Google Ads and Meta Ads reach people at different stages of the buying journey. Understanding that difference can help you decide which platform is most suitable for your products, your customers and your budget.

What’s the main difference between Google Ads and Meta Ads?

The simplest way to think about it is: Google Ads captures existing demand, while Meta Ads helps create it.

When someone searches Google for a product, they’re actively looking for something. They might be researching their options, comparing prices or ready to buy. This is reactive PPC (although Google Ads can also serve proactive advertising - which we’ll get in to later).

Meta Ads work differently - they’re proactive. Your ads appear while people are scrolling through Facebook or Instagram. They may not have been looking for your product, but the right image, video or message can introduce it to them and spark their interest.

For example, someone searching for ‘handmade bath bombs’ on Google already knows what they want. On Meta, a colourful video showing the bath bombs in action could catch the attention of someone who hadn’t considered buying them until that moment.

Both platforms can generate sales - they simply approach customers in different ways.

How does Google Ads work for eCommerce?

Google Ads allows eCommerce brands to promote their products across Google Search, Shopping, YouTube and other websites within Google’s network.

Some of the main campaign types used by eCommerce businesses include:

• Google Shopping
• Performance Max
• Search campaigns
• Display and remarketing campaigns

Shopping and Performance Max campaigns are particularly useful because they can show the product image, name, price and retailer directly within the search results. This gives potential customers useful information before they even visit your website.

The benefits of Google Ads

One of Google Ads’ biggest strengths is customer intent.

If someone is searching for a specific product, there’s a good chance they’re already interested in buying it. Google allows you to get your products in front of those people at the point when they’re actively considering a purchase.

It can be particularly effective for:

• Products people already know about
• Products that solve a clear problem
• Items with regular search demand
• Brands competing on price, quality or a clear point of difference
• Businesses looking to generate sales from customers who are closer to purchasing

Google Ads can also provide valuable information about the products and searches driving results. This can help you understand what customers want and where there are opportunities to grow.

The potential drawbacks

Google Ads can be competitive, especially if you sell products in a crowded market. When several businesses are targeting the same searches, click costs can quickly increase.

It can also be harder to advertise a completely new or unfamiliar product. If people don’t know that something exists, they’re unlikely to be searching for it.

Performance also relies on more than simply switching a campaign on. Accurate tracking, a well-organised product feed and the right campaign structure all play an important part.

Where does Performance Max fit in?

For many eCommerce businesses, Performance Max - often shortened to P-Max - plays a central role in their Google Ads strategy.

Performance Max campaigns can use your product feed alongside headlines, descriptions, images and videos to promote your products across Google’s advertising channels. This includes Shopping, Search, YouTube, Display, Discover, Gmail and Maps. 

Rather than choosing one individual placement, Google uses automation to decide where and when your ads are most likely to generate a sale. It can then adjust bids and distribute budget based on the conversion goals you’ve set.

For eCommerce brands, P-Max can be particularly useful because it allows products from a linked Google Merchant Centre account to appear in relevant Shopping placements. Campaigns can also be organised around different product ranges, priorities or profit margins, helping businesses focus their budget on the products that matter most.

However, P-Max isn’t a case of setting up a campaign and leaving Google to do everything. Its performance still depends on having:

• Accurate purchase and revenue tracking
• A complete and well-optimised product feed
• High-quality images, videos and written assets
• Relevant product and landing pages
• A campaign structure based on your commercial priorities
• Enough reliable conversion data to guide Google’s automation

Although P-Max offers broad reach, it can provide less direct control than a traditional Search campaign. This is why it’s important to regularly review product performance, search insights, creative assets and the quality of the sales being generated.

Used properly, Performance Max can be a valuable way to generate eCommerce sales across Google’s network. But it tends to work best as part of a wider strategy, alongside Search campaigns and appropriate campaign controls, rather than being treated as a complete hands-off solution.

How do Meta Ads work for eCommerce?

Meta Ads allow businesses to advertise across Facebook and Instagram using images, videos, carousels and product catalogues.

Rather than relying on someone searching for your product, Meta uses information about its users’ interests and online behaviour to find people who may be interested in what you sell.

It’s a visual platform, which makes it a good fit for products that can be demonstrated, styled or brought to life through creative content.

The benefits of Meta Ads

Meta can help you reach new audiences before they begin searching for your product.

A strong video, customer testimonial, product demonstration or lifestyle image can stop someone mid-scroll and give them a reason to visit your website.

It can work particularly well for:

• Visually appealing products
• Lifestyle brands
• Products with a strong story or clear transformation
• Impulse purchases
• Products that benefit from a demonstration
• Brands with plenty of strong creative content

Meta is also a useful retargeting platform. You can show relevant ads to people who have visited your website, viewed a product or added something to their basket without completing their order.

The potential drawbacks

People using Facebook and Instagram aren’t necessarily looking to shop. Your ad is interrupting what they were already doing, so the creative needs to give them a good reason to stop and pay attention.

Creative fatigue can also become an issue. Even a successful ad can lose its impact if the same audience sees it too many times. This means Meta campaigns often need a steady supply of fresh images, videos and messaging.

Measuring results can be less straightforward too. Meta, Google Analytics and platforms such as Shopify may attribute sales differently, so their figures won’t always match perfectly.

When should an eCommerce brand choose Google Ads?

Google Ads may be the stronger starting point if customers are already searching for the products you sell.

This could include anything from dog kennels and garden sheds to clothing transfers, skincare products or specialist equipment.

If your product has clear search demand and your priority is reaching people with an existing interest, Google can put your brand in front of customers who are already further along in their buying journey.

It may also suit businesses that don’t currently have a large library of lifestyle photography or video content, although strong imagery is still important for Shopping and Performance Max campaigns.

When should an eCommerce brand choose Meta Ads?

Meta may be a better starting point if customers need to see your product before they understand why they want it.

It’s especially useful when your product is visual, demonstrable or likely to generate an emotional response. This could include fashion, beauty, homeware, gifts or products with a noticeable before-and-after result.

Meta also gives brands more opportunities to communicate their personality. Videos, testimonials, user-generated content and founder-led content can all help customers get to know the business as well as the product.

However, this means having the right creative is essential. A good product alone doesn’t guarantee a successful Meta campaign – the way it’s presented matters too.

Do you need both Google Ads and Meta Ads?

For many eCommerce brands, the strongest approach isn’t choosing one platform over the other. It’s using them together.

Someone might first discover your product through an Instagram Reel, visit your website and leave without buying. A few days later, they may search for your brand or product on Google and complete their purchase.

In this situation, Meta helped create the interest and Google captured the final search.

Using both platforms can help you reach customers across more of their buying journey:

• Meta introduces the brand and generates interest.
• Google captures customers who are actively researching or ready to buy.
• Retargeting reminds previous visitors to come back.
• Repeated visibility helps build familiarity and trust.

This is also why looking at each platform in complete isolation can be misleading. A sale credited to Google may have started with a Meta ad, while someone who appears to have purchased directly may have seen several ads beforehand.

Should you split your budget equally? 

Not necessarily. A 50/50 split may sound fair, but your budget should reflect where the strongest opportunities are.

Before deciding how much to allocate to each platform, consider:

• Whether people are already searching for your products
• How visual or demonstrable the products are
• Your average order value
• Your profit margins
• How long customers usually take to purchase
• The quality and quantity of your creative content
• The amount of data already available
• Whether your priority is immediate sales or wider brand growth

You also need to give each campaign enough budget and time to gather useful data. Spreading a small budget too thinly across several platforms and campaign types can make it difficult to learn what is actually working.

Once you have enough information, budgets can be adjusted according to profitable sales - not simply clicks, traffic or engagement.

Don’t forget about tracking

Whichever platform you choose, reliable tracking is essential.

Without it, it’s difficult to tell which campaigns, products and audiences are generating genuine results.

Your tracking set-up may include:

• Google Ads conversion tracking
• Google Analytics
• The Meta Pixel
• Meta’s Conversions API
• Shopify or another eCommerce platform
• Consistent UTM parameters

It’s normal for these platforms to report slightly different numbers because they use different attribution models. One system may credit the first interaction, while another gives more value to the final click before purchase.

Rather than expecting every figure to match exactly, look at the wider picture. This includes total sales, revenue, new customers, repeat purchases and overall profitability.

A strong ROAS inside an advertising platform looks good, but it only tells part of the story.

So, which platform is better for eCommerce?

Google Ads is often strongest when customers already know what they want and are actively searching for it. Within Google Ads, Performance Max can help eCommerce brands promote their products across several Google channels, while Search campaigns capture specific, high-intent searches. Meta Ads can then support the wider strategy by introducing the brand to new audiences and bringing previous visitors back to the website.

Meta Ads is often strongest when a product needs to be seen, demonstrated or introduced to a new audience.

But for many eCommerce businesses, the best results come from using both platforms together. Meta can generate awareness and interest, while Google captures people when they’re ready to search and buy.

The right choice ultimately depends on your products, audience, budget and wider business goals. It isn’t about choosing the most popular platform – it’s about finding the combination that delivers profitable, sustainable growth.

Find the Right PPC Strategy for Your eCommerce Business

Choosing between Google Ads and Meta Ads is only one part of building a successful paid advertising strategy. The right campaign structure, accurate tracking and ongoing optimisation all play an important role in generating profitable growth.

At BAW Creative, we can help you identify the best mix of platforms for your products, customers and budget.

Speak to us to find out how we can help your eCommerce business get more from paid advertising.

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