SEM (Search Engine Marketing)
The broader practice of marketing through search engines, including both SEO (organic) and PPC (paid). Often used incorrectly to mean only paid search.
Why It Matters
SEM encompasses everything you do to gain visibility in search engines - both organic (SEO) and paid (PPC/Google Ads). Understanding this distinction matters because the two channels work differently but complement each other.
The confusion arises because many people use "SEM" to mean only paid search. This leads to siloed thinking where SEO and PPC teams don't share data or coordinate strategy. The most effective search marketing combines both channels strategically.
In Practice
Use PPC data to inform SEO strategy. Google Ads shows you which keywords convert - target those organically for long-term, free traffic. Use SEO data to improve PPC - if you already rank #1 organically for a term, you might reduce ad spend there.
Coordinate your SERP presence. For high-value terms, owning both organic and paid positions dramatically increases total clicks. For terms where you rank well organically, consider whether the ad spend is better allocated elsewhere.
Don't treat SEO and SEM as competing channels. They're complementary. PPC delivers immediate results while SEO builds over time. The most effective strategies use both.
Common Mistakes
Running paid search and organic as separate teams with separate budgets and no shared data. The best SEM strategies treat them as one system - organic informs your ads, ads validate your keywords, and the data pool is shared.
Sources & Further Reading
Where to verify this yourself - Google's own documentation, industry reporting, and how we apply it at Underdog. Don't take our word for it; check the source.
Related Terms
Glossary
SEO (Search Engine Optimisation)
Improving your site's visibility in organic search - an ongoing system, not a project.
Glossary
SERP (Search Engine Results Page)
The page Google shows after a search - the competitive landscape you're fighting in.
Glossary
Click-Through Rate (CTR)
The percentage of searchers who see your listing and actually click it.
Glossary
Keyword Research
Finding what your audience searches for - the foundation of every SEO strategy.
Know the Words.
Now See Them in Action.
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