Difference between SEO and SEM
Aspect
SEO (Search Engine Optimization)
SEM (Search Engine Marketing)
Cost

Organic, no direct cost but requires time and effort.
Paid ads, where you pay per click or impression.
Time to See Results
Takes time, often months, to see significant results.
Provides immediate visibility once ads are launched.
Positioning in Search Results
Appears below paid ads, in organic results.
Ads appear at the top or bottom of search results, above organic listings.
Sustainability
Long-lasting results that continue after initial efforts.
Results last only as long as the ads are running and being paid for.