Canonical URL
CONCEPT
SEARCH OPTIMIZATION
The preferred URL among duplicate or very similar pages, signaled to search engines with rel=canonical, redirects, sitemaps and internal links.
CONCEPT
SYSTEMS ARCHITECTURE
Website Cookies
Small name–value records that a web server asks a user agent to store and return with eligible HTTP requests to maintain state.
BUSINESS RELEVANCE
Cookies enable essential session and personalization functions and can support measurement, but their use affects privacy, consent, security, vendor governance, and analytics reliability.
IMPLEMENTATION EXAMPLE
An application stores a random session identifier in a Secure, HttpOnly, SameSite cookie, keeps sensitive account data server-side, rotates the identifier after login, and applies consent controls to non-essential analytics cookies.
LIMITATIONS
Cookies can be stolen, leaked, blocked, deleted, or used for intrusive tracking. They have size and scope limits, cross-site use is restricted by default in browsers such as Safari and Firefox, and consent does not replace data minimization or secure design.
TECHNICAL EXPLANATION
Servers set cookies through Set-Cookie; browsers return matching values in Cookie according to domain, path, expiry, Secure, HttpOnly, SameSite, and other rules. Cookies may support sessions, preferences, security, analytics, or advertising and may be first-party or third-party by context.
Secondary Topics
Cybersecurity, Data Engineering, Performance Advertising
Sources
IETF RFC 6265 — HTTP State Management Mechanism — https://www.rfc-editor.org/rfc/rfc6265; OWASP — Session Management Cheat Sheet — https://cheatsheetseries.owasp.org/cheatsheets/Session_Management_Cheat_Sheet.html
Related terms
Design Token
CONCEPT
EXPERIENCE DESIGN
A named variable encapsulating atomic visual design attributes such as color values, typography rules, and spacing scales.
301 Redirect
CONCEPT
SEARCH OPTIMIZATION
Permanent HTTP 301 redirects preserve search equity and guide user journeys during URL changes, migrations, and site restructuring.
Microservices
CONCEPT
SYSTEMS ARCHITECTURE
Applications split into independently deployable services that own their data and communicate through APIs or events instead of shared code and databases.
Agentic AI
CONCEPT
INTELLIGENT AUTOMATION
Autonomous AI systems that pursue complex goals through iterative reasoning, planning, tool usage, and operational adaptation.