What Is Digital Marketing and How Does It Work?

Digital marketing is promoting a business online through search, social media, websites, apps, email, content, influencers and ads to win customers.

Digital marketing is the promotion of a business through online channels, including search engines, websites, mobile apps, social media, email, content, influencers and online advertising. It works by reaching people where they already spend time online, giving them a reason to pay attention, and guiding them step by step from first discovering you to buying and coming back. Unlike most traditional marketing, almost everything in digital marketing can be measured, so you can see what works and put more behind it.

The short version

  • Digital marketing is marketing that happens online. Search, social, email, content, apps, influencers and ads are its main channels
  • It follows the customer journey. Awareness, consideration, conversion and loyalty each need different tactics
  • Owned, earned and paid media work together. Your website, your reputation and your ad spend reinforce each other
  • It is measurable. You can track which channel and message brought each customer
  • Start small and focused. A clear website, Google visibility and one social channel beat a scattered presence everywhere

How digital marketing works

Every customer goes through a journey, whether it takes ten minutes or ten months. Digital marketing places the right message at each stage.

StageWhat the customer is doingChannels that work best
AwarenessDiscovering a problem or noticing a brandSocial media, influencers, video, display and social ads, PR
ConsiderationResearching options and comparingSearch (SEO and ads), website content, reviews, email, AI assistants
ConversionDeciding and buying or enquiringWebsite and landing pages, retargeting, offers, fast replies
LoyaltyUsing the product, buying again and recommendingEmail, apps, communities, social media, referral programmes

The channels feed each other. Someone sees your Reel, searches your name on Google, reads reviews, visits your website, signs up to your emails and buys three weeks later. Good digital marketing makes every one of those touchpoints consistent and easy.

The main types of digital marketing

Search engine optimisation (SEO)

SEO is the practice of making your website rank higher in Google's unpaid results. It covers technical health, content that answers what people search, and authority from links and mentions. SEO is slow to start and powerful once it works, because rankings keep sending visitors without paying for each click. Our guide on how to improve SEO explains the fundamentals.

App store optimisation (ASO)

ASO is SEO for mobile apps. It improves where an app ranks in App Store and Google Play search and how many viewers install it. For any business with an app, it is often the cheapest source of new users. See our guide on how to improve ASO.

Search ads appear above organic results, and you pay when someone clicks. They deliver traffic immediately and are ideal for high-intent searches like "emergency plumber near me". The trade-off is that traffic stops when the budget stops.

Social media marketing

Building an audience and engagement on platforms such as Instagram, TikTok, LinkedIn, X, Facebook and YouTube, through organic content, community management and paid social ads. Social is strongest for awareness and relationships. Read how to find customers on social media.

Content marketing

Creating useful articles, videos, guides, tools and resources that attract and educate customers. Content powers SEO, gives social media something worth sharing and builds trust before a sale.

Email marketing

Sending newsletters, offers and automated sequences to people who have opted in. Email is one of the highest-return channels because you own the list and reach people who already know you.

Influencer marketing

Partnering with creators whose audiences match your customers. It ranges from small niche creators to large personalities, and now includes AI influencers such as our SI influencers, photorealistic AI-generated characters that promote brands consistently across markets, with every post disclosed as AI.

Websites and mobile apps

Your website is the hub of all digital marketing. Almost every channel sends people there to learn more, enquire or buy. Apps play the same role for loyal customers, with notifications, saved details and faster reordering.

AI search optimisation

A newer discipline. Tools like ChatGPT, Claude, Perplexity and Google's AI Overviews now answer questions and recommend businesses directly. Being cited by them depends on clear, structured, trustworthy content, which is closely related to SEO. See our guide on getting recommended by ChatGPT and AI search.

Owned, earned and paid media

A helpful way to organise digital marketing is by who controls the channel.

The strongest strategies use paid media to accelerate, owned media to convert and earned media to build long-term trust.

Digital marketing versus traditional marketing

Traditional marketing, such as print, TV, radio and billboards, still has a place, especially for broad awareness. Digital marketing differs in a few important ways. It can target precise audiences by location, interest and behaviour. It is measurable down to individual campaigns and messages. It can start with small budgets and scale with results. And it is interactive, so customers can respond, share, ask questions and buy in the same moment.

How to build a digital marketing strategy

You do not need every channel. You need the right few, done well. A simple strategy follows six steps.

  1. Set a clear goal. More enquiries, more online sales, more app installs or more bookings, with a number and a date.
  2. Define your customer. Who they are, what they need, where they spend time online and what they search for.
  3. Fix your foundation. A fast website that explains your offer clearly and is set up for search, with analytics in place.
  4. Choose two or three channels. Usually SEO for long-term demand, one social platform for awareness and either email or ads for conversion.
  5. Create a content plan. Topics based on your customers' questions, repurposed across your channels.
  6. Measure monthly and adjust. Keep what brings customers, cut what does not, and test one new idea at a time.

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How much does digital marketing cost?

It depends entirely on your goals, market and channels. Some channels mainly cost time, such as SEO done in-house, organic social media and email to your own list. Others cost money directly, such as ads, influencer fees, agencies and tools. A useful rule is to start where your customers already are and where you can afford to be consistent for at least six months, because most channels need time to show their real results. Agencies, including Proklisi, scope work to your goals and quote per project.

Key digital marketing metrics

MetricWhat it tells you
Traffic by channelWhere your visitors come from
Conversion rateThe share of visitors who enquire, book or buy
Cost per lead or acquisitionWhat each new customer costs by channel
Customer lifetime valueWhat a customer is worth over time
Return on ad spendRevenue earned for each unit spent on ads
Organic impressions and rankingsHow visible you are in search
Engagement and reachHow much attention your content earns

Digital marketing in action

Three simple examples show how the channels work together in practice.

A local clinic claims its Google Business Profile, builds a page for each treatment and asks every patient for a review. Within months it appears in the map pack for treatments in its area. Instagram Reels answering common patient questions build familiarity, and a monthly email brings existing patients back for check-ups.

An online fashion brand creates short videos of outfits for TikTok and Instagram, partners with creators and AI influencers to reach new audiences, and retargets viewers with ads. Product pages are optimised for searches like "linen dresses for summer", and an email sequence welcomes first-time buyers with styling tips.

A B2B software company publishes guides answering the questions its buyers search, which rank on Google and get cited by AI assistants. The founder posts weekly lessons on LinkedIn. A free tool on the website captures leads, and an email sequence nurtures them until they book a demo.

Common digital marketing mistakes

Digital marketing words you will hear

Doing it yourself or working with an agency

Many small businesses start by doing digital marketing themselves, which is a great way to learn what works. An agency becomes worthwhile when the work needs specialist skills, such as technical SEO, development, video production or paid media management, when you need consistent output you cannot staff in-house, or when you want one partner coordinating several channels so they reinforce each other.

Want a partner for all of it?

Website, app, SEO, ASO, social and SI influencers under one roof, with one plan and one team accountable for growth

Written by the Proklisi editorial team

Proklisi builds websites and apps, runs SEO, ASO and social media, and creates SI influencers for brands. Everything here comes from work we do for clients every week. About us or talk to the team

Frequently asked questions

What are the main types of digital marketing?

SEO, app store optimisation, pay-per-click advertising, social media marketing, content marketing, email marketing, influencer marketing and, increasingly, AI search optimisation, all built around a website or app that converts visitors

Is digital marketing worth it for a small business?

Yes, especially because it can start small and be measured precisely. A clear website, a Google Business Profile, basic SEO and one well-run social channel bring customers to most small businesses

What is the difference between SEO and digital marketing?

SEO is one part of digital marketing. Digital marketing is the whole set of online channels, while SEO focuses specifically on ranking in unpaid search results

How long does digital marketing take to work?

Paid ads can bring traffic the same day. Social media and email usually take a few months to build momentum, and SEO typically takes three to six months for meaningful results, then keeps compounding

What digital marketing channel should I start with?

Start with your website and Google visibility, because almost every other channel sends people there. Then add the one social platform or ad channel where your customers spend the most time

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