Online marketing is a broad term with many other items falling in underneath, such as web design, search engine optimization, as well as everything with marketing at the end, email, social media, text, content etc....
My pasion has been all that encompasses Online Marketing since 2001 when I began learning web design.
It is very important that all businesses have a website that is optimized for search engines. but just as important it has to be optimzed for conversions. Every website in existance has a goal, they want to sell something, get someone to send information, or provide free content.