A keyword is a label that is put onto a word or a group of words that an internet user types to find what he/she needs in a search engine. These keywords are very essential in terms of SEO as the SEO itself means Search Engine Optimization and is to optimize your content to match the keywords that a large group of users searches. So, if you channelize your content and correctly place the keywords that enhance your content, you could drive home a huge amount of organic traffic to your website depending on your niche.
Keywords are pretty important for not only SEO but for all of the Digital Marketing domain that is associated with written content. If you wish to get trained and skilled in Digital Marketing, then I would recommend you to take up the online Digital Marketing course from Intellipaat. which offers you instructor-led training and guided projects along with exercises. Also, I would like you to watch our YouTube video on the Digital Marketing course to get started with the basics of the domain.