Strategy

What is online marketing? The complete guide

Online marketing is all the work that gets customers to find and choose you online. Here are the key channels explained, and how they work together.

Michael Kirkegaard Michael Kirkegaard · 2 min read · SEO
Illustration of several glowing icons for different marketing channels arranged around a laptop, symbolizing online marketing

Online marketing is the umbrella term for all the work that gets the right people to find, remember and choose your business online. It covers a handful of channels, each with its own strength, and they grow strongest when they work together. Here is the full picture, explained so you can put it to use.

The key channels in online marketing

No single channel is right for everyone. It depends on your business, your customers and where you stand today. But most companies work with a combination of these:

  • SEO, search engine optimization, which makes you visible on Google without paying per click.
  • Google Ads, paid ads that bring speed and fast results.
  • Paid social, advertising on Meta and other platforms, where the creative is king.
  • Email marketing, the channel you own yourself, and the one that drives repeat sales.
  • Branding, the work that makes every other channel cheaper.
  • GEO, the new discipline of getting named by AI assistants like ChatGPT.

A classic way to understand online marketing is to split the channels into three:

Paid is what you buy your way into: Google Ads and paid social. It brings speed, but it stops the moment you turn off the money.

Owned is what you control yourself: your website and your email list. It is the most durable part of your marketing, because no one can raise the price or change the rules on you.

Earned is the visibility you build over time: organic rankings on Google, mentions and recommendations. It takes the longest to build and is the hardest for competitors to copy.

The best setups use all three and let them reinforce each other.

Why coherence beats single channels

A common mistake is running channels in isolation as if they compete for credit. They should reinforce one another: Google Ads data can sharpen SEO, while SEO and paid social can grow the email list. This is the basis of a connected omnichannel approach.

What should you measure?

The most important principle in online marketing is to measure the right outcome. Clicks, likes and traffic are easy to count, but decisions should follow what reaches the bottom line. POAS can therefore be more informative than ROAS alone.

Where should you start?

Start with what matches your situation. Need sales now, go with paid advertising. Want to build something durable, go with SEO and content. But from day one, plan how the channels should play together. Want help with that plan? Book a meeting and we will look at it together.

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