SEO(Search Engine Optimization) means optimizing our website to get better traffic and rank on search engines(Google, Bing, Yahoo, etc.) without paying money. SEM(Search Engine Marketing) means optimizing our website to get better sales, rank on the SERP(search engine result page) with spending money.
SEO (Search Engine Optimization) Business Factors:
SEO Optimization Factors
SEM (Search Engine Marketing) Business Factors:
SEM Optimization Factors
SEO or SEM, which is better for business?
SEO & SEM both are need for online & offline business, but the requirement is to change for each business category like eCommerce, online presence, sales, online traffic, etc. so choose which one is suitable for your business requirement.