Difference B/w Smo, Seo & Smm

Hello guys, Could you please explain difference between SMO, SEO and SMM. I am waiting for your reply. Thanks

 

The main difference between SEO and SEM is that SEO is the process to improve the visibility of the website over the search engine's organic or free search results whereas SEM is the paid service means you have to pay to the search engines for your target result display over the SERPs.

 

Thanks for replying on my post. Hope it can be very helpful for people who are doing SEO.