You have a marketing budget and too many options. Should you pour money into ads? Build an audience on social media? Hire an influencer? Every channel promises results, but each one fits a different kind of business, goal, and wallet.
This guide walks through the main digital marketing channels in plain English. For each one, you'll learn what it is, when it works best, which businesses benefit most, and the real costs involved. By the end, you'll have a clearer sense of where to spend your time and money.
How to Think About Channels Before You Spend
Before diving in, keep three things in mind.
First, channels split into two camps: owned and earned (like SEO, content, and email) versus paid (like ads and influencer deals). Owned channels take time but compound. Paid channels work fast but stop the moment you stop paying.
Second, costs come in several forms: your time, creative production (writing, design, video), ad spend, software subscriptions, agency or freelancer fees, and your overall customer acquisition cost (CAC), the total price to win one customer.
Third, the "best" channel depends on your business type. A local plumber and a global software company should rarely spend the same way.
Search Engine Optimization (SEO)
What it is: SEO is the practice of getting your website to show up in unpaid Google results when people search for what you offer.
When it works best: When people actively search for your product or solution, and you can afford to wait a few months for results. SEO is a long game, not a quick win.
Who benefits most: Local businesses (through local search and Google Business Profiles), ecommerce brands targeting product searches, and B2B services that can answer customer questions with helpful pages.
Costs involved: Mostly time and content production. You'll spend on writers, SEO tools (roughly £100–£300 a month for software like Ahrefs or Semrush), and possibly an agency (£1,000–£10,000+ a month). The traffic itself is free, which makes CAC drop sharply over time.
Content Marketing
What it is: Creating useful articles, guides, videos, and resources that attract and educate your audience.
When it works best: When your customers research before buying, or when you sell something that needs explaining.
Who benefits most: SaaS companies and B2B services thrive here, since complex products demand education. Creator-led brands also win by building trust through valuable content.
Costs involved: Time and creative production are the main expenses. A skilled writer might cost £100–£500 per article; video production runs higher. Content pairs naturally with SEO, so the two often share a budget.
Paid Search (PPC)
What it is: Ads that appear at the top of search results, where you pay each time someone clicks (pay-per-click).
When it works best: When you want immediate traffic from people ready to buy, and you can track which clicks turn into sales.
Who benefits most: Ecommerce brands, local businesses chasing nearby customers, and B2B firms targeting high-value keywords. Startups use it to test demand fast.
Costs involved: Pure ad spend, plus management. Cost per click ranges from under £1 to £50+ in competitive areas like legal or insurance. Budget for management software or an agency taking 10–20% of spend. CAC can be high in crowded markets.
Paid Social
What it is: Ads on platforms like Facebook, Instagram, TikTok, and LinkedIn, targeted by interests, demographics, and behavior.
When it works best: When you want to reach people who aren't actively searching but fit your customer profile. Great for visual products and impulse-friendly offers.
Who benefits most: Ecommerce and creator-led brands shine on Instagram and TikTok. B2B and enterprise firms find their audience on LinkedIn, though clicks there cost more.
Costs involved: Ad spend plus creative. You'll need strong images or video, which means design or video costs. LinkedIn ads run expensive; TikTok and Meta can be cheaper to start. Plan to test several creatives before finding a winner.
Organic Social
What it is: Building a following and posting content for free on social platforms.
When it works best: When you can post consistently and your brand has personality. It builds trust and community over time.
Who benefits most: Creator-led brands and local businesses, who connect through authenticity. Startups use it to build buzz without big budgets.
Costs involved: Mostly time, plus content creation. The "free" reach is real but shrinking, so many businesses eventually pair it with paid social. A community manager or content creator might cost £2,000–£5,000 a month.
Email Marketing
What it is: Sending messages directly to people who've shared their email, from newsletters to promotions.
When it works best: When you have an audience to nurture. Email consistently delivers one of the highest returns of any channel.
Who benefits most: Nearly everyone, but especially ecommerce (cart reminders, offers), SaaS (onboarding, retention), and creator-led brands building loyal audiences.
Costs involved: Low. Email software runs from free to a few hundred dollars a month based on list size (Mailchimp, Klaviyo, ConvertKit). The main cost is the time to write and design campaigns. Because you already own the audience, CAC is minimal.
Influencer Marketing
What it is: Paying creators to promote your product to their followers.
When it works best: When trust and social proof drive purchases, and your product suits a creator's audience.
Who benefits most: Ecommerce and creator-led brands, especially in beauty, fashion, food, and fitness. Smaller "micro-influencers" often deliver better value than celebrities.
Costs involved: Fees vary wildly, from free product gifting to thousands per post. Add creative coordination time. Results can be hard to track, so start small and measure before scaling.
Affiliate Marketing
What it is: Partners promote your product and earn a commission on each sale they drive.
When it works best: When you can pay only for results, making it low-risk. Ideal for products with clear, trackable purchases.
Who benefits most: Ecommerce brands and SaaS companies with recurring revenue. It rewards partners for performance, so costs scale with sales.
Costs involved: Commissions (often 5–30% per sale), affiliate software or network fees, and time to recruit and manage partners. Since you pay per sale, CAC stays predictable.
Display Advertising
What it is: Banner and image ads shown across websites and apps.
When it works best: For brand awareness and retargeting people who've already visited your site.
Who benefits most: Ecommerce and enterprise firms with awareness goals. Retargeting works well for almost any business with website traffic.
Costs involved: Ad spend is cheap per impression, but click rates are low. Budget for banner design. Best used to support other channels, not as your main driver.
Video Marketing
What it is: Promoting your business through video on YouTube, TikTok, and beyond.
When it works best: When showing beats telling, like demos, tutorials, or storytelling.
Who benefits most: SaaS (product demos), ecommerce (product videos), and creator-led brands. YouTube also doubles as a search engine, helping long-term discovery.
Costs involved: Production is the big one, from £0 for phone-shot clips to thousands for polished work. YouTube ad spend is separate. Video reuses well across channels, stretching your investment.
Marketplaces
What it is: Selling through platforms like Amazon, Etsy, or app stores where buyers already shop.
When it works best: When customers search these platforms directly and you want built-in traffic.
Who benefits most: Ecommerce brands and product sellers. Marketplaces hand you an audience, but you compete on price and visibility.
Costs involved: Listing fees, sales commissions (often 8–15%+), and optional marketplace ads. You trade margin for reach and convenience.
Partnerships
What it is: Teaming up with non-competing businesses to reach each other's audiences.
When it works best: When another company serves your customers without competing. Think co-marketing, integrations, or referral deals.
Who benefits most: SaaS companies (integrations), B2B services (referral networks), and startups looking to borrow trust quickly.
Costs involved: Often low in cash but high in time. You invest in relationships, joint content, or revenue-sharing rather than ad spend.
How to Choose Where to Invest
Start with one question: where are your customers already paying attention? Then weigh speed against cost. Paid channels buy fast results but drain budget when you stop. Owned channels like SEO and email cost more time upfront but pay back for years.
A smart approach: pick one paid channel for quick wins and one owned channel for long-term growth. Test small, track your cost per customer, and double down on what works.
You don't need every channel. You need the two or three that fit your business, your budget, and your customers. Master those first, then expand.