Keyword research is the process of finding the exact words and phrases people type into search engines when looking for information, products, or services related to your business. It’s the foundation of any SEO strategy, because ranking for the wrong keywords means attracting the wrong audience. Popular keyword research tools include Google Keyword Planner (free, great for beginners), Ubersuggest, Ahrefs, and SEMrush (more advanced, paid options). These tools show you important data like search volume (how many people search a term monthly), keyword difficulty (how hard it is to rank for), and related keyword suggestions. Learning to use even one of these tools well is enough to start building a solid keyword strategy.