What is SEO?
SEO comes from Search Engine Optimization. It is a way to increase the people reaching your website by making it appear on the first page of search engines like Google, Bing, Yahoo ant others. The higher it is in these results, the better change for people to enter it and see YOUR business.
Why should you invest in SEO?
Optimization works and it will for a loong time
Optimization techniques work besides the continuous changes in the Google algorithms. These techniques will always return better results.
Return of Investment
In comparison with other advertisement methods like social ads or paid online ads, in the high Google ranking, you will not need to convince your clients that they need your product, because obviously, they are searching for it.
All Internet users use search engines
With every passing year, the count of people using the Internet, is growing more and mroe. This, of course, expands the chances of someone finding you (especially if you are on first page) and becoming your client.
Your competitors do it
No need to explain this :)