Digital marketing essentials: SEO, PPC and content marketing

The essentials of digital marketing are search engine optimisation (SEO), pay-per-click advertising (PPC) and content marketing. SEO earns visibility in search results that keeps paying off, PPC buys attention straight away, and content gives people a reason to find you and trust you. Most businesses get the best results when the three work together.

What is digital marketing?

Digital marketing is any way a business reaches, informs or sells to people through digital channels. That includes search engines, ads on websites and social networks, email, content and apps. Because every company mixes these channels differently, there is no single correct setup. There are, however, a few building blocks almost every plan relies on.

Why does digital marketing matter?

Many buyers research online before they talk to a seller, whether they are choosing a lunch spot or a CRM. Digital channels let you be present during that research, target specific audiences and measure what each campaign returns in visits, leads and sales. Traditional channels such as print, events and direct mail still have their place, and they often work better when digital marketing supports them. See online versus offline marketing.

SEO: the foundation

SEO is the work of making your pages useful to searchers and easy for search engines to find, understand and show. Google says changes can show in results within a few hours or take several months, so SEO is a long-term investment. These are the factors that matter most.

1. Keywords and search intent

Find the words and questions your audience types into search engines, then write pages that answer them. Google's Keyword Planner, a tool inside Google Ads, shows keyword ideas with estimated monthly searches and cost estimates. Use the words people use, naturally. Google's spam policies forbid keyword stuffing, which means filling a page with keywords to manipulate rankings. Read how to do keyword research.

2. Titles and meta descriptions

Meta tags sit in a page's code and describe it to search engines. Two matter most:

• The title, which Google often uses as the clickable headline. Google advises titles that are unique to the page, clear, concise and accurate.
• The meta description, which Google sometimes shows as the snippet under the title. A good one is short, unique to the page and covers its most relevant points.

Skip the meta keywords tag. Google does not use it. For help writing descriptions, see tips to write meta descriptions.

3. Backlinks

Backlinks are links from other websites to yours. Google says it has systems that understand how pages link to each other, and that PageRank, one of its original ranking systems, is still part of its core ranking systems. Earn links with content others want to cite, such as original data, useful guides and free tools. Buying links that pass ranking credit, or placing links with keyword-rich anchor text in guest posts and press releases, counts as link spam under Google's policies. More in building backlinks.

4. Helpful content

Content that genuinely answers the searcher's question is what search engines try to rank. Write for people first, keep pages accurate and update them when things change. Google also has freshness systems that favour recent content for searches where recency matters.

5. On-page and technical basics

• Describe images with alt text.
• Link related pages to each other with descriptive link text.
• Use a clear structure and navigation so people and crawlers can find everything.
• Make pages fast and stable. Google says Core Web Vitals are used by its ranking systems, but good scores alone do not guarantee top rankings.

Our technical SEO audit guide covers the checks in detail.

PPC: paid traffic you can switch on

Pay-per-click is an advertising model in which the advertiser pays the publisher each time someone clicks an ad. It is the fastest way to get visitors, which makes it useful for new websites, launches and testing which messages work. Traffic stops when spending stops, so PPC complements SEO rather than replacing it.

Google Ads

Google Ads shows ads on Google Search and across Google's network. You choose keywords, set a budget and decide how much to bid. A higher bid alone does not win the top spot. Google ranks ads with Ad Rank, which combines your bid with:

• the quality of your ad and landing page
• Ad Rank thresholds
• how competitive the auction is
• the context of the person's search
• the expected impact of ad assets such as sitelinks

Google says higher quality ads can often lead to lower costs per click. See the benefits of advertising with Google Ads.

Social media ads

Microsoft Advertising and Amazon run PPC ads too, and so do social networks, including Facebook, Instagram, LinkedIn, Reddit, Pinterest, TikTok and X. Choose the network where your buyers spend time. For B2B, LinkedIn Ads stands out because it lets you target by job title, company, industry and seniority, and retarget website visitors and lists of named accounts.

Content marketing: why people choose you

The Content Marketing Institute defines content marketing as a strategic approach focused on creating and distributing valuable, relevant and consistent content to attract and keep a clearly defined audience, and ultimately to drive profitable action.

Common formats:

• blog posts and how-to guides
• original research and reports
• webinars, videos and podcasts
• templates, checklists and free tools
• newsletters

Content feeds the other two channels. It gives SEO pages to rank and links to earn, and it gives PPC campaigns something better to promote than a sales page. You can write it in-house, work with freelancers or hire an agency. What matters is that the people creating it understand your audience. Our guide on how to improve content marketing has more.

How to put the three together

1. Start with your audience. Write down who you sell to and which questions they ask before they buy.
2. Build content that answers those questions, one clear page per topic.
3. Optimise those pages for search so they can be found without paying for every visit.
4. Use PPC to test and to fill gaps, for example to promote a new product or a high-value page while it climbs in search.
5. Measure everything in an analytics tool, and move budget to what brings leads and customers.

Each channel costs either time or money. Together they give you traffic now and a stream of visitors that keeps growing. For a full plan, read how to build a digital marketing strategy.