Dictionary
SEO/SEM/Marketing dictionary
Explore our comprehensive SEO, SEM, and digital marketing glossary designed to help you understand key terms, strategies, and industry jargon with clear, practical definitions.
Whether you’re just starting to explore digital marketing or looking to refine your strategy, this glossary will help you navigate the key concepts shaping SEO and SEM today. If you’d like to dive deeper, check out our related services such as SEO and AI trainings, AI Search Optimization, Content Marketing — each designed to boost your brand’s online visibility and performance.
A
Above the fold
Ad audience
Ad banner
Ad click
Ad impression
Ad network
Ad server
Ad tag
Ad targeting
Ad view
Affiliate marketing
Attribution
Audience
Audience measurement
Audience targeting
B
C
Campaign
Click-Through Rate (CTR)
Content Site Page
Content Marketing
Conversion
Conversion
Cookie
Cost Per Action (CPA)
Cost Per Click (CPC)
Cost Per Lead (CPL)
Cost Per Thousand (CPM)
Customer Relationship Management (CRM)
Web Crawler
Cross-Device Targeting
D
Data Management Platform (DMP)
Demographic Targeting
Display Advertising
Domain Name
Dwell Time
E
F
G
Geographic Targeting
Geotargeting
H
Heading Tags (H1-H3)
HTML
Hyperlink
HTTPS
K
Keyword Targeting
Key Performance Indicator (KPI)
L
Lead Generation
Link
Link Building
Log File
Longtail
M
N
O
P
Web Page
Page Impression
Pay Per Click (PPC)
Pay Per Impression
Pay Per Lead (PPL)
Pay Per Sale (PPS)
Personalization
Programmatic Advertising
Programmatic Direct
Q
R
Reach
Redirect
301 Redirect
302 Redirect
Referral Link
Repeat Visitor
Responsive Design (RWD)
ROI (Return on Investment)
Return on Ad Spend (ROAS)
Real-time Bidding (RTB)
S
Search Advertising
Search Engine
Search Targeting
Second-party Data
Semantic Targeting Data
Search Engine Marketing (SEM)
Search Engine Optimization (SEO)
Server
Session
Site Retargeting
Social Marketing
Sponsorship
T
U
URL (Uniform Resource Locator)
URL Tagging
User-centric Measurement
V
SERVICES
Core services
-
Insight-driven SEO
-
Web Analytics
Your website visitors are telling you exactly how to grow your business. We help you hear them.
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Ecommerce Analytics
Behind every sale is a pattern. We uncover the ones that fuel your next wave of growth.
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Enterprise Data Management
Achieve better business outcomes with optimized data management. We secure, govern, and streamline your data for compliance and success.
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*activate.com, 2025

