Wh Ask for Cookie Consent? | 매거진에 참여하세요

Ever noticed that when you visit European or North American websites, a cookie consent banner immediately pops up

That’s not a UX choice. It’s law.

What Are Cookies, Really?

Cookies are tiny bits of data stored in your browser when you visit a website.

They help maintain logins, track what pages you viewed, remember your preferences—and yes, deliver personalized ads.

The issue? These behaviors often involve personal data. Think browsing history, clicked products, and even location data.

So governments stepped in.

Global Regulations Driving Consent Banners

Across Europe and increasingly in other regions, cookie usage—especially for marketing or tracking—requires explicit user consent.

Let’s break it down:

🇪🇺 European Union: GDPR + ePrivacy Directive

• GDPR (General Data Protection Regulation) demands clear and informed consent before collecting or processing personal data.

• ePrivacy Directive, nicknamed the “Cookie Law,” goes further:

  “Accessing a device via cookies or similar technologies requires prior consent—unless strictly necessary.”

So unless the cookie is essential (e.g. for login), you must ask permission first.

🇺🇸 United States: CCPA (California Consumer Privacy Act)

• The U.S. lacks a federal privacy law like GDPR.

• But states like California have strong rules.

  • Users have the right to know what data is collected.

  • They can request deletion or opt-out of third-party data sharing.

  • Opt-out, not opt-in is key here. A “Do Not Sell My Info” link is common, but banners are optional.

🇧🇷 Brazil: LGPD

🇨🇦 Canada: PIPEDA

These countries also require varying forms of consent—mostly opt-in—especially if services involve personalized data use.

Consent, Categorized: Which Cookies Need Approval?

What Is a CMP, and Why Should You Care?

A Consent Management Platform (CMP) is the backend system

that handles cookie consent, blocking or allowing scripts based on user decisions.

Core Functions of a CMP:

• - Displaying banners (Accept / Settings / Reject)

• - Letting users customize preferences

• - Blocking scripts until consent is given

• - Saving consent logs (for audits)

• - Adapting UI by user’s region or language

Popular CMPs include:

Client vs. Server CMP Setup

1. - Client-side CMP (JS-based)

   • Plug-and-play SaaS with dashboards

   • Easy to integrate, lower control

   • Tools: Cookiebot, Didomi, Usercentrics

3. - Server-side / On-prem CMP

   • Full control, better security

   • Ideal for regulated industries

   • Tools: OneTrust (offers on-prem deployment)

Regional Law Mapping: Consent Strategies Vary

The most advanced CMPs auto-detect a user’s location (via IP or language) and dynamically adjust consent flows accordingly.

Thinking of Implementing CMP? Here's Your Checklist:

• Are you targeting EU, California, Brazil, or Canada? ✅

• Do you use Google Analytics or advertising SDKs? ✅

• Is your cookie UI customizable to match your brand? ✅

• Are you logging consent decisions securely? ✅

• Do you offer multilingual support? ✅

• Have you tested SEO impact? (Some CMPs block search bots!) ✅

In Short

The reason you’re seeing cookie banners on international sites—but not always in Korea—is because those sites are legally obligated to ask.

Privacy laws like GDPR and CCPA are reshaping the global web, one cookie popup at a time.

Cookie compliance insights: bunzee.ai