At some point, every business owner asks the same question.
"Should I be doing SEO, or should I just run ads?"
It sounds simple. It rarely gets a straight answer.
Ask an SEO agency and they'll tell you SEO. Ask a paid media agency and they'll tell you Google Ads. Ask a social media agency and they'll tell you Meta. Everyone recommends what they sell. That's not advice, it's a sales pitch with a content strategy wrapped around it.
The honest answer is that there isn't a universally best channel. There's the best channel for your margins, your timeline, your customers and how quickly you need results. And those things are different for every business.
This article gives you a framework for working it out. No agenda. No channel to sell you. Just a clear way of thinking about where your next pound will work hardest.
Before getting into which channel is right for your business, there's a conversation worth having that most agencies skip entirely.
Most businesses choose a channel based on what they've heard works. A competitor is running Google Ads. Someone at a networking event swears by Meta. An agency sends a cold email promising page one rankings. And so, a budget decision gets made, often a significant one, based on anecdote rather than numbers.
The problem isn't the channel. It's that the decision was made without the information needed to make it properly.
Three things should be established before any channel conversation happens.
What's the maximum you can afford to spend to win a customer and still make money? This is your margin divided by your conversion rate, and it determines whether paid acquisition is even viable at your current price point. Most businesses have never calculated it. Most agencies never ask.
A customer who buys once at £50 is worth £50. A customer who buys every six weeks for two years is worth significantly more. That number changes everything, which channels make sense, how aggressively you can bid, how long you can afford to wait for a return. If you don't know your LTV, you're making channel decisions without the most important number on the table.
How quickly do you need results? Not how quickly would you like them, how quickly do you actually need them? A business under short-term revenue pressure has different options to one playing a longer game. Being honest about this upfront saves a lot of wasted budget.
Get these three numbers clear before any channel decision is made. Everything else follows from them.
Here's something worth saying plainly.
Most businesses think they know which channel is performing. Most are working from incomplete data.
Last-click attribution, which is still the default in most reporting setups, gives 100% of the credit for a sale to the last channel the customer touched before converting. Which means paid search looks like a hero, because it's often the last click before purchase. And SEO, email and paid social, which may have started the conversation weeks earlier, get nothing.
The result is predictable. Paid search gets more budget. Everything else gets defunded. And the business wonders why its cost per acquisition keeps climbing.
Before deciding which channel deserves more investment, it's worth understanding what your attribution model is actually telling you and what it's leaving out. A customer who found you through an organic search, came back via a social post and converted on a paid ad didn't come from paid. They came from all three. The paid ad just happened to be standing at the finish line.
This matters because it changes the channel conversation entirely. The question isn't just "which channel drives conversions." It's "which channels are contributing to the journey", and which ones are being quietly starved of budget because the reporting doesn't show their role.
With the numbers clear and the attribution picture understood, the channel decision becomes much more straightforward. Four questions cut through most of the noise.
Be honest about your timeline. It changes everything.
If you need revenue in the next ninety days, SEO won't deliver it. Google Ads can. Paid social can, with the right creative and offer. If you're playing a longer game, reducing your dependence on paid spend over the next twelve to eighteen months, SEO is the right investment to be making now.
Most businesses need both. But the balance depends entirely on urgency. A business under short-term revenue pressure should not be putting its entire budget into SEO. A business with stable revenue and a long-term growth plan should not be ignoring it.
This is the conversation most agencies avoid. It's the most important one.
Google Ads works on margin. Here's what that looks like in practice.
Your average order value is £40. Your margin is 35%, so you have £14 per sale before you break even on acquisition. Your conversion rate on the landing page is 2%. At £1.20 cost per click, you're spending £60 to generate one sale.
The maths doesn't work. You're losing money on every customer you acquire through paid search. And no amount of campaign optimisation will fix a margin problem.
Higher margin products and services can absorb the cost of paid acquisition. Lower margin businesses need organic channels to make the economics work. Know your numbers before you commit budget to paid.
Customer lifetime value changes the entire channel equation. And most businesses don't factor it in.
If your customers buy once and rarely return, your acquisition cost needs to be low. Paying £60 to acquire a customer who spends £40 once is a loss. Organic channels become more important because the cost per acquisition drops over time.
If your customers buy repeatedly (subscription models, consumables, loyalty-driven categories), you can afford to pay more to acquire them. A customer who spends £40 every six weeks for two years is worth significantly more than their first order suggests. Paid acquisition makes more sense because the lifetime value justifies the upfront cost.
Before deciding on channel, know what a customer is actually worth to your business. Not just on the first order, but over their lifetime.
Paid social works best for products that can be shown, demonstrated, or experienced visually. If someone can see your product and immediately want it — fashion, homeware, food, beauty, fitness equipment. Meta and Instagram deserve serious budget.
If your product requires explanation, comparison, or research before purchase (B2B services, technical products, considered purchases), then search-based channels will outperform social almost every time. The customer needs to be actively looking, not passively scrolling.
Know where your customer is in their decision-making process when they first encounter your brand. That tells you which channel reaches them at the right moment.
Most businesses underestimate how long SEO takes. Most overestimate how quickly paid will become profitable. Both assumptions cost money.
Realistic timeline to meaningful organic traffic: six to twelve months for a site starting from a low base or that hasn't been properly optimised. The compounding effect kicks in after that. Rankings improve, authority builds, traffic grows without proportional increases in cost.
The businesses that get the best returns from SEO are the ones that commit long enough to see the compounding effect. The ones that quit at month four, because nothing dramatic has happened yet, never see the return. They've paid for the foundation and walked away before the building went up.
Can drive traffic immediately. But profitability takes time.
The first four to eight weeks are typically a learning phase. The algorithm is optimising. You're testing creative and copy. Quality scores are lower before they improve, which means CPCs are higher before they settle. Budget for a period where returns are lower than they'll eventually be. And don't judge the channel on week two performance.
Fastest to launch. But creative fatigue is real.
An ad that performs well in week one will typically see declining returns by week four to six as the audience becomes familiar with it. Maintaining paid social performance requires a consistent pipeline of fresh creative — new images, new copy, new angles. That's an ongoing investment, not a one-time setup cost.
Every channel has a ramp-up period. The businesses that get the best returns are the ones that commit long enough to see it. And budget for the learning phase rather than being surprised by it.
Most businesses end up using more than one channel. The question is how to weight them at different stages of growth.
Pick one channel and do it properly. Spreading £1,000 a month across three channels means doing none of them well. Which channel depends on the four questions above, but commit to one, execute it properly, and measure the results before adding complexity.
Typically, paid search to drive immediate revenue while SEO builds in the background. Paid social for retargeting, reaching people who've already visited the site but didn't convert. This combination covers immediate intent and warm audiences without requiring a large budget.
All three channels working together. SEO handling top and mid-funnel organic traffic. Google Ads capturing high-intent bottom-funnel searches. Paid social for awareness, new audience development, and retargeting.
The mistake most businesses make at every stage is treating channels as independent rather than complementary. They work better together:
The best channel mix isn't the most sophisticated one. It's the one your business can execute consistently with the budget you have.
Bring the four questions together and most businesses land somewhere in this territory:
Most businesses end up with a mix. But knowing which channel to weight most heavily and why, is the difference between a strategy and a guess.
The businesses that get the best returns from their marketing aren't always the ones with the biggest budgets.
They're the ones that understand their margins, know their customer lifetime value, are honest about their timeline, and put their budget in the right place as a result.
That's not complicated. But it does require someone to ask the right questions before recommending a channel, rather than recommending the channel they happen to sell.
If you're not sure where your next pound should go, that's the conversation worth having.
