Do Ecommerce Sites Need SEO and PPC? When to Use Each

Most ecommerce sites get the best return from running SEO and PPC together, but not always in equal measure or from day one. PPC (Google Shopping and search ads) puts your products in front of buyers straight away and tells you quickly which products and searches make money. SEO builds organic visibility for your category and product pages over time, so you are not paying for every single visit.

Which one should lead depends on how established your shop is, your margins, the size of your catalogue, how competitive your market is and how much cash you can tie up while SEO builds. A brand new store usually leans on PPC first. An established shop with thin margins often gets more from investing in SEO. This guide walks through how to decide, with a worked example on the numbers and the mistakes we see most often.

What SEO and PPC actually do for an online shop

Before deciding where the money goes, it helps to be clear on what each channel covers for ecommerce specifically. Both are about Google search, but they work very differently.

What PPC covers for ecommerce

PPC means pay per click. You pay Google each time someone clicks your ad. For online shops, that usually includes:

• Google Shopping ads: the product listings with an image, price and shop name that appear at the top of many product searches. These run from a product feed, usually through Google Merchant Center.
• Performance Max campaigns: Google's automated campaign type that shows your products across Search, Shopping, YouTube, Display and Gmail.
• Standard search ads: text ads for searches like "buy oak dining table" or your brand name.
• Remarketing: showing ads to people who have visited your site but did not buy.

The big advantages are speed and control. You can switch campaigns on today, push a particular product, pause over a bank holiday and see exactly which search terms led to sales.

What SEO covers for ecommerce

SEO is the work that helps your pages appear in the unpaid (organic) results. If you want a refresher on the basics, our guide on what SEO means for small firms covers it in plain English. For an online shop, SEO usually involves:

• Technical health: making sure Google can crawl and index the right pages, handling filters and sorting options so they do not create thousands of near duplicate URLs, and keeping the site fast.
• Category pages: often the most valuable pages on an ecommerce site, because they match broader searches like "women's walking boots" or "garden storage benches".
• Product pages: unique descriptions rather than the manufacturer's copy that fifty other retailers also use, clear titles, and product structured data so Google can show price and stock information.
• Helpful content: buying guides, sizing help and comparison pages that answer the questions people ask before they buy.
• Earning links: through genuinely useful content and digital PR, not paid links or schemes.

SEO is slower to take effect, but the traffic it brings does not stop the moment you stop paying for clicks.

How they compare side by side

Factor	PPC (Shopping and search ads)	SEO
Speed to appear	Same day or within days	Usually months, depending on competition and the site's starting point
Cost model	Pay for every click, plus management	Fixed monthly investment in work, no cost per click
Control	High: choose products, budgets, times and locations	Lower: Google decides rankings, you improve your chances
What happens when you stop	Traffic stops almost immediately	Visibility tends to fade gradually rather than overnight
Data	Detailed search term and conversion data quickly	Slower, broader data through Search Console
Best suited to	Launches, testing, seasonal pushes, high margin products	Long term cost of sale, category visibility, brand trust

When PPC should come first

There are situations where leading with paid ads is simply the sensible choice. That does not mean ignoring SEO, but PPC should take the larger share of attention and budget for a while.

You have just launched the shop

A brand new domain has no organic history, few or no links and no track record with Google. Even with excellent SEO work, it will take time to appear for competitive product searches. If you need sales this quarter to keep the business going, Shopping ads are the fastest way to get in front of buyers.

The good news is that the SEO groundwork (clean site structure, proper category pages, unique product copy) can happen at the same time, so you are not starting from scratch later.

You are testing new products or ranges

PPC is a fast way to find out whether a product sells at a price that makes sense. A few weeks of Shopping data tells you which items get clicked, which get bought and which just burn budget. That is far quicker than waiting for organic rankings to find out a product was never going to work.

You sell seasonal or time sensitive stock

If a big chunk of your year happens in a short window (Christmas gifts, summer garden furniture, back to school), you cannot wait for SEO to catch up after the season has started. PPC lets you scale up for the peak and scale back afterwards. That said, seasonal category pages built and optimised well ahead of time can pick up organic traffic year after year, so the two work well together here.

Your margins can comfortably absorb click costs

If your products carry healthy margins or high order values, paid clicks can be profitable from the first sale. In that case, PPC is not just a stopgap, it can be a core, scalable sales channel.

You need to clear stock

Clearance lines, end of season stock and overstocked items can be pushed hard through Shopping campaigns with promotions, then switched off once they are gone. SEO is not built for that kind of short burst.

When SEO should lead

Equally, there are shops where pouring more money into ads is the wrong move and a stronger organic presence is what will make the difference.

Your margins are thin

If you sell lower priced or heavily discounted products, the cost of a click can eat most or all of your profit on a first order. Shops in this position often find that paid ads keep revenue flowing but leave very little behind. Building organic traffic to category and product pages lowers the average cost of each sale over time.

Your market has expensive auctions

In crowded markets where large retailers bid heavily, click costs can be high enough that a small shop struggles to compete on paid alone. Organic results give you another route onto the page, particularly for more specific searches the big players do not cover well, such as niche product types, particular materials or detailed specifications.

You have a large or specialist catalogue

A shop with hundreds or thousands of products has a huge number of potential searches to appear for. Bidding profitably on every one is hard. Well structured category pages and properly written product pages can capture a long tail of specific searches that would be impractical to manage through ads.

Your buyers research before they buy

For considered purchases (furniture, specialist equipment, higher value gifts), buyers often search for guides, comparisons and advice first. Helpful buying guides and category content can meet them earlier in that journey, which ads are less suited to.

You are too dependent on paid traffic

If most of your sales come from ads, a rise in click costs, a policy change or a product feed disapproval can hit revenue overnight. SEO gives you a second leg to stand on.

Why most shops get the best return from both

For most established ecommerce businesses, the question is not "SEO or PPC" but "how much of each, and how do they help each other". Run properly, the two channels make each other more effective.

Working out the numbers: margins, ROAS and break even

The right mix comes down to your own figures, not general rules. Here is a simple way to think about it, using made up illustrative numbers rather than any real client.

Step 1: Work out your break even ROAS

ROAS means return on ad spend: how much revenue you get for every pound spent on ads. Your break even ROAS is the point where ad spend exactly matches the gross profit it brings in.

Imagine a shop with an average order value of £80. After product cost, packaging, delivery and payment fees, it keeps £32 of gross profit per order. The break even ROAS is £80 divided by £32, which is 2.5. So for every £1 spent on ads, the shop needs at least £2.50 in revenue just to cover the ad cost on that first order. Anything below that loses money, anything above it adds profit.

Step 2: Factor in repeat customers

If a good proportion of customers come back and buy again without further ad spend, the first order does not need to carry the whole cost. Some shops deliberately accept a lower ROAS on first orders because they know their repeat purchase rate. Only you can judge this from your own order history, so look at it honestly rather than hoping.

Step 3: Look at SEO as a fixed cost against sales

SEO does not have a cost per click. It has a fixed monthly cost for the work. The question is whether the extra organic sales, at your margin, cover that cost over a sensible timescale. Using the same example, each organic order brings in £32 of gross profit. You can work out roughly how many additional organic orders a month would cover your SEO investment, then judge whether that is realistic for your market.

Bear in mind that SEO usually takes months to show meaningful movement. Our article on realistic SEO results over six months explains what progress typically looks like and why patience matters.

Step 4: Compare where the next pound works hardest

Once you know your break even ROAS and your current results, ask a simple question: where would the next £100 do more good? If your Shopping campaigns are comfortably above break even and limited by budget, more ad spend may be the answer. If they hover around break even and you have little organic visibility, SEO is probably the better long term investment.

How to split budget by stage

There is no single correct split, but this table shows how the balance commonly shifts as a shop matures. Treat it as a starting point for discussion, not a formula.

Stage	Role of PPC	Role of SEO
Launch (first months)	Main source of traffic and sales. Tight focus on best sellers and higher margin products. Gather search term data.	Foundations: site structure, category pages, unique product copy, technical setup, tracking.
Growth	Scale what is profitable, cut what is not, add remarketing. Use data to inform content.	Build out category pages and buying guides based on proven demand. Start earning links through useful content and digital PR.
Established	Focus on new products, competitive terms, seasonal pushes and brand protection where needed.	Carries a larger share of sales. Ongoing optimisation, fresh content, fixing issues as the catalogue changes.

A shop that stays in the launch pattern for years, relying almost entirely on ads, is usually leaving money on the table. A shop that cuts ads entirely the moment SEO starts working often loses sales it did not need to lose.

Common mistakes we see on ecommerce accounts

After 15 years working with small businesses, we see the same problems come up again and again. Most are fixable.

PPC mistakes

• A poor product feed: vague product titles, missing attributes like colour, size or material, and low quality images all hold back Shopping performance. The feed is the foundation of Shopping ads.
• No negative keywords: without them, you can pay for clicks from people searching for free items, repairs, jobs or completely different products.
• Treating every product the same: lumping hundreds of products into one campaign makes it hard to push the profitable ones and rein in the rest.
• Broken conversion tracking: if Google Ads cannot see sales accurately, both you and Google's bidding are working blind. Check this first.
• Judging on revenue, not profit: a campaign bringing in lots of revenue at a ROAS below break even is losing you money.

SEO mistakes

• Using manufacturer descriptions: if the same text appears on dozens of other sites, Google has little reason to prefer yours.
• Thin category pages: a grid of products with no supporting copy gives Google less to understand what the page is about.
• Filter and sorting URLs running wild: faceted navigation can create thousands of near identical pages that waste Google's attention on your site.
• Deleting out of stock products carelessly: removing pages that have built up visibility, without redirecting them sensibly, throws that value away.
• Giving up too early: stopping SEO after two or three months, before it has had a fair chance, means paying for the groundwork without seeing the benefit.

Edge cases worth thinking about

Not every online seller fits the standard picture. A few situations change the advice.

You mainly sell on marketplaces

If most of your sales come through Amazon, eBay or Etsy, SEO for your own website may be less urgent than optimising your marketplace listings. However, relying entirely on a platform you do not control carries risk. Building your own site's visibility, even slowly, gives you more independence over time.

You have a very small catalogue

A shop with a handful of products has fewer pages to rank and fewer searches to target. SEO can still work well, especially with strong content around the problem your product solves, but PPC may be simpler to manage profitably if the products have clear, specific search terms.

You also have a physical shop

If customers can collect in person or visit a showroom, local search matters too. A well maintained Google Business Profile and consistent local citations help you appear for nearby searches, so treat local SEO as its own piece of work alongside your ecommerce SEO.

Your products are restricted in ads

Some product categories face restrictions or extra requirements in Google Ads. If your products fall into one of these, SEO becomes more important because your paid options are limited.

You sell B2B

Trade and wholesale shops often have longer buying cycles and buyers who search for specific part numbers or specifications. Detailed, well structured product pages can perform strongly in organic search here, while PPC tends to work best when focused tightly on high intent searches.

Questions shop owners usually ask

Can SEO eventually replace PPC completely?

For some shops, organic search can become the main source of sales and paid ads shrink to a supporting role. Replacing PPC entirely is less common, because ads still give you control over new products, seasonal peaks and competitive terms. It is better to aim for a healthy balance than to aim for zero ad spend.

Should I stop bidding on my brand name if I rank first for it organically?

It depends. If competitors bid on your brand name, your own brand ads can protect those sales. If nobody else is bidding, you may be paying for clicks you would have received anyway. The honest answer is to test it carefully and watch what happens to total sales, not just ad clicks.

How long before SEO pays for itself?

Nobody can promise a timescale, and you should be wary of anyone who does. It depends on your site's starting point, your competition and how much work goes in each month. What you can do is set sensible measures of progress (indexed pages, impressions, rankings for category terms, organic revenue) and review them regularly.

What does it cost to run both?

At DPOM, our fixed monthly pricing starts at £585 per month for e-commerce SEO and £145 per month for Google Ads management, with your ad spend paid directly to Google on top. You can see what each level includes on our SEO pricing and packages page. No long contracts, no hidden fees and no pay-on-results deals, just a clear fixed monthly fee for the work.

My ads are already running. Where do I start?

Start by checking whether your current campaigns are actually profitable. Many shops are spending on products and search terms that never convert. Our free Google Ads audit is a straightforward way to find wasted spend and missed opportunities before you decide where to put more budget.

A simple decision checklist

If you want a quick way to decide where to focus, work through these questions:

1. Is the shop new, with little organic visibility? Lean on PPC for sales while SEO foundations are built.
2. Do you know your break even ROAS? If not, work it out before spending another pound on ads.
3. Are your ads comfortably profitable and limited by budget? Consider increasing ad spend on the products that work.
4. Are your ads hovering around break even? Tighten campaigns and shift more investment into SEO.
5. Would switching ads off halve your sales? You are too dependent on paid. Build organic visibility.
6. Do your category and product pages have unique, helpful content? If not, that is often the first SEO job.
7. Is your conversion tracking accurate? Fix this first, because every other decision depends on it.

Working with a Google Partner agency that handles both channels means someone is looking at the whole picture, rather than two separate suppliers each arguing for their own budget. If you would like to understand the wider organic side before committing, our SEO services page explains how we approach it for small businesses.