SEO Question: How Is SEO Different From SEM?
SEO and SEM are quite different.
SEM is also often referred to as internet marketing.
It’s common for these terms to be used incorrectly, but in summary, SEO is one element of SEM, as is SMM.
The use of SEM is recommended for most website owners because it provides you a variety of traffic sources, which is always good for longer term stability and continuity.
If you rely wholly on SEO and Google make a change to their algorithms which reduces your rankings and traffic, your bottom line will take a hit, whereas if you have a wider spread of traffic sources, you will be less affected by the whims and vagaries of each search engine.