SEO stands for search engine optimization. SEO is the process of taking steps to help a website or piece of content rank higher on Google.
SEO is also one of the only online marketing channels that, when set up correctly, can continue to pay dividends over time. If you provide a solid piece of content that deserves to rank for the right keywords, your traffic can snowball over time, whereas advertising needs continuous funding to send traffic to your site.
The Keyword Planner will help you narrow down a list of possible keywords to ensure you're choosing the most effective ones for your business.
Additionally, Keyword Planner will give you suggested bid estimates for each keyword, so you can determine which keywords work with your advertising budget. Best of all, once you've found your ideal keywords and are ready to launch an ad campaign, you can do it all from within the tool.