What is digital marketing? Channels, examples and how to begin

Digital marketing is any marketing that reaches people through digital channels: search engines, websites, social media, email, messaging apps, online video and mobile apps. Its purpose is the same as any marketing, to help the right people discover a business and choose it, but it has one big advantage: almost everything can be measured.
Digital marketing vs traditional marketing
Traditional marketing, such as newspaper ads, hoardings, radio and pamphlets, reaches a broad audience, and it is hard to know exactly who responded. Digital marketing can target people by what they search for, their interests, their location and their past visits to your site, and it shows you which campaign produced each enquiry or sale. Most businesses use a mix of both, but digital channels make it far easier to start small and learn quickly.
The main digital marketing channels
Search engine optimisation (SEO)
Improving a website so it appears in unpaid search results. It builds lasting visibility but takes time. See our guide What is SEO?
Pay-per-click advertising (PPC)
Paid ads, mainly Google Ads, that appear when people search, browse websites or watch YouTube. You pay when someone clicks, and results can start the same day.
Social media marketing
Building an audience and running ads on Instagram, Facebook, LinkedIn, YouTube and X. Social media is strong for awareness, community and visual products.
Content marketing
Creating useful articles, videos, guides and tools that attract and help your audience. Content supports SEO, social media and email.
Email marketing
Sending relevant emails to people who have agreed to hear from you. It is low cost and works well for repeat customers and long decisions.
Local marketing
Appearing in Google Maps and local search through a Google Business Profile and reviews. Essential for shops, clinics, restaurants and service businesses.
Analytics
Measuring what works with tools such as Google Analytics 4 and Google Search Console, so money and effort go to the channels that perform.
How a small business might use digital marketing
Imagine a coaching institute in a busy city. It might:
- keep its Google Business Profile complete so nearby students find it on Maps;
- publish helpful exam guides on its website to attract searches;
- post short videos with study tips on Instagram and YouTube;
- run a small Google Ads campaign around admission season;
- send a weekly email or WhatsApp update to enquiries who have not yet enrolled;
- check every month which channel brought enquiries that turned into admissions.
None of these needs a large budget. What they need is a plan and consistency.
Skills a digital marketer needs
- Understanding people: what your audience wants and how they decide.
- Writing: clear headlines, ads, posts and emails.
- Tools: Google Ads, Meta Ads Manager, Search Console, GA4 and similar.
- Numbers: reading reports, calculating cost per lead and return on spend.
- Testing: trying ideas, measuring them and keeping what works.
How to start learning
- Learn the basics of each channel so you understand the options.
- Practise on something real: your own blog, a family business or a practice site.
- Choose one or two channels to go deeper, such as SEO or paid ads.
- Keep a portfolio of what you did and what happened.
Our Digital Marketing Course covers every channel with hands-on practice, and the Advanced Digital Marketing Course takes each one further.