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What is Two-factor authentication?

Two-factor authentication: An extra login step that proves who you are.

Where Two-factor authentication fits

Two-factor authentication is part of Online Business in Digital & Tech. Online business sells through websites and marketplaces. Landing pages, SEO, ads and checkout design drive conversion, and cybersecurity protects customers.

Practical tip

Test your funnel, protect data and use two-factor authentication.

Related terms

E-commerce
Buying and selling goods or services online.
Cybersecurity
Protecting systems and data from digital attacks.
Automation
Using technology to do tasks without manual work.
Minimum viable product
The simplest version of a product that lets you test an idea.
Landing page
A web page built to turn visitors into leads or buyers.
Cloud computing
Renting computing power and storage over the internet instead of owning servers.
Digital marketing
Promoting products through online channels.
Pay-per-click
Advertising where you pay each time someone clicks.

Formulas you will use with it

Conversion rateClick-through rate (CTR)Cost per click (CPC)Cost per lead (CPL)

Test yourself

Which term means: “An extra login step that proves who you are.”?

Cloud computing · Two-factor authentication · E-commerce

Answer: Two-factor authentication

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