SEO keywords play a pivotal role in raising your online visibility. However, let's delve deeper and understand, what exactly is a keyword in SEO.

In online advertising, a keyword is a particular term or expression that users input on search engine sites when they are searching for a particular service, product or information. SEO heavily is based on the use of these keywords for website ranking.

The power behind SEO keywords lies in their ability to relate what users are searching for to the content that you’re offering on your website. Cleverly using these keywords will help pull in the right audience and improve the likelihood of conversions.

Having established the definition of an SEO keyword, let's look at how to use keywords efficiently. Improving the use of keywords calls for a balance. You'd want to include read more relevant keywords to get the attention of search engines but without overloading your content with them.

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

It's also essential to choose keywords that connect with your target audience. It means understanding the way they talk, their searching habits and their wants.

To conclude, a well-chosen SEO keyword can act as a bridge between a prospective client's search and your website. It's a vital tool in achieving success in the cut-throat world of digital marketing. However, the best results can only be achieved by using it effectively and responsibly.