Learn about SEM
SEM (Search Engine Marketing) captures high-intent demand with paid search and turns it into revenue through ads, landing pages, and bidding.
Why SEM
When customers search, paid ads sit at the top and capture the most urgent demand. People click the few visible results.
SEM keeps you in that shortlist while organic rankings mature. If you are not visible on high-intent searches, competitors take the click.
Top-of-page visibility
Ads appear before organic results.
High-intent clicks
Capture demand at the exact moment of search.
Control + speed
Adjust bids and budgets without waiting weeks.
SEM Fundamentals
The core levers that keep paid search efficient and scalable.
- Keyword research: intent, competition, and negatives
- Account structure: campaigns, ad groups, and match types
- Ad relevance: copy, assets, and extensions
- Landing alignment: message match and speed
- Bidding + budgets: guardrails and pacing
- Measurement: conversions, LTV, and incrementality
SEM math explained
Revenue = (Spend / CPC) x Conversion rate x AOV. ROAS = Revenue / Spend. CPA = Spend / Conversions.
Ad economics
Key concepts
Query intent
Keywords, match types, and negatives capture demand.
Ad relevance
Copy and extensions lift CTR and quality.
Auction quality
Bid and quality score decide position.
Landing experience
Message match and speed drive CVR.
Optimization loop
Queries, budgets, and signals improve efficiency.
Glossary
A few SEM terms you will hear in every account review.
CPC
The cost of a single ad click.
Quality score
Relevance and landing quality in the auction.
Match types
How closely queries must match keywords.
ROAS
Revenue divided by ad spend.
Conversion rate
Percent of visitors who complete the action.
CPA
Cost to acquire one conversion.
Coming soon
Deep dives that expand the fundamentals with practical guides.
Coming soon
What an SEM process looks like
Coming soon
SEM in your ad account
Coming soon
Deeper SEM knowledge
Coming soon
Automation and AI bidding