Keywords in SEO play a pivotal role in boosting your online presence. But what really is an SEO keyword? Let's explore.

In online advertising, a keyword is a particular term or expression that individuals input into web browsers when they are trying to find a unique service, product or information. SEO heavily is based on the use of these keywords to position websites.

The essence behind SEO keywords lies in their ability to link what users are searching for to the content that your website offers. Strategically using these keywords will help draw the right audience and improve the likelihood of turnover.

Having established the concept of an SEO keyword, let's look at how to use keywords efficiently. Optimizing the use of keywords demands a balance. You'll want to include relevant keywords to appeal to search algorithms but not overly saturate your content with them.

One way is placing the keyword in your content’s headline. This not only helps in optimization, but also makes your content more relevant to the searcher's query. Next, consider using keywords in the meta description and headers of your website, as website these are places where search engines often look.

Furthermore, it's crucial to choose keywords that resonate with your targeted market. It means understanding how they communicate, their search behaviors and their requirements.

To conclude, a well-chosen SEO keyword can serve as a link between the user's query and your online content. It's a critical tool to succeed in the competitive world of digital marketing. However, success hinges on its effective and balanced use.