Digital marketing is the use of digital channels — search engines, social media, email, paid advertising, and websites — to attract, engage, and convert customers. Unlike traditional marketing (print, TV, radio), digital marketing is trackable, measurable, and adjustable in real time. In 2026, digital marketing also includes Answer Engine Optimisation (AEO) and Generative Engine Optimisation (GEO) — ensuring a business is cited by AI tools like Google AI Overviews, ChatGPT, and Perplexity.
If your business has a website, a social media account, or has ever run a Google Ad, you are already doing digital marketing. The question is not whether to do it — it is how to do it consistently, strategically, and in a way that produces measurable returns.
The main types of digital marketing
- Search Engine Optimisation (SEO) — improving your website's visibility in Google and Bing organic results through technical improvements, content, and link acquisition
- Answer Engine Optimisation (AEO) — structuring content so AI tools like Google AI Overviews, ChatGPT, and Perplexity cite your business when users ask relevant questions
- Pay-Per-Click Advertising (PPC) — placing paid ads on Google, Bing, Meta, LinkedIn, and TikTok where you pay per click or impression
- Content Marketing — creating articles, guides, videos, and resources that attract and inform potential customers
- Social Media Marketing — building brand presence and running paid campaigns on Instagram, TikTok, LinkedIn, X, and Facebook
- Email Marketing — automated and broadcast emails that nurture leads and retain existing customers
- Web Design and Development — building and optimising websites for performance, user experience, and conversion
- Conversion Rate Optimisation (CRO) — improving the percentage of website visitors who take a desired action (enquire, purchase, subscribe)
How digital marketing differs from traditional marketing
Traditional marketing — print ads, TV commercials, radio spots, billboards — relies on broad reach and estimated audience sizes. You run a campaign, then estimate whether it worked based on sales trends. Digital marketing inverts this model. Every click, impression, conversion, and return visit is recorded. You know exactly which keyword drove a call, which ad creative generated a purchase, and which email sequence converted a subscriber into a customer.
This measurability changes what is possible. A digital marketing programme can be tested, refined, and improved continuously. An ad that is not converting can be paused the same day. A blog article that is attracting high-quality traffic can have budget shifted towards it. This level of responsiveness is not possible with traditional media.
Digital marketing and AI search in 2026
The landscape shifted significantly in 2024–2026 as AI-generated answers became a primary response format on Google, Bing, Perplexity, and ChatGPT. A growing proportion of searches now return AI-generated summaries at the top of results — with links to cited sources. Businesses that structure their content correctly are cited inside these summaries and receive highly qualified referral traffic. Those that do not are invisible regardless of their traditional SEO rankings.
SEO (Search Engine Optimisation) focuses on ranking your pages in traditional Google search results — the ten blue links. AEO (Answer Engine Optimisation) focuses on being cited inside AI-generated answers — the summaries that now appear above traditional results on Google AI Overviews, and as the primary response on Perplexity and ChatGPT. A complete 2026 digital marketing strategy requires both.
How much does digital marketing cost in the UK?
- SEO retainer: £995–£4,995/month depending on competitiveness and scope
- PPC management: 12–18% of ad spend (min £950–£3,500/month) plus the ad spend itself
- Content marketing: £1,495–£6,995/month for a full programme
- Social media management: £995–£4,995/month
- Web design: £3,495–£18,000+ for a new site
- Email marketing: included within broader retainers or £500–£2,000/month standalone
Yes — but the mix differs from larger businesses. Small businesses with limited budgets typically achieve the best ROI by prioritising Google Business Profile optimisation (free), local SEO, and a focused PPC campaign on high-intent keywords. A modest monthly budget of £800–£1,500 invested consistently in the right channels will outperform a larger, poorly directed budget.
In-house gives you control and cultural alignment; an agency gives you specialist expertise, broader tools, and faster execution. Most UK SMBs hire an agency for technical disciplines (SEO, PPC, AEO) where expertise is the differentiator, while managing social media and content in-house where brand voice matters most. Hybrid models — agency strategy and technical execution, in-house content and community — are increasingly common.