Identity Conversion.
Identity conversion is the share of visitors who become identified, signed-in customers, and the practice of improving it by tracking pre-login activity and testing sign-up and sign-in flows. The label is vendor-coined.
CIAM has long been sold on security and compliance. The identity conversion framing sells it on revenue: every abandoned sign-up and every guest cart lost at login is a measurable cost. Auth0's early-access announcement and product documentation describe the two features behind the label, Anonymous Sessions and Experiment Center.
The vendor-neutral version has three parts. First, keep state for unidentified visitors and merge it on sign-up, which is account linking applied to a guest. Second, ask for less up front and collect the rest later, which is progressive profiling. Third, measure: sign-up completion, sign-in success rate by method, and the time each step takes, then test changes rather than guess.
Our reading. The risk in pre-login sessions is identity, not analytics. A guest session that later merges into an account must not let one person's guest data land in another person's profile, for example on a shared device, and a session that outlives login needs an explicit end. Auth0's docs note that the anonymous session cookie is not automatically flushed when a user authenticates and that the session is ended through a dedicated /anonymous/logout endpoint, which is the kind of detail to check in any vendor's implementation. Onboarding patterns are in customer onboarding and progressive profiling.
Common questions
What is identity conversion?
It is the rate at which anonymous visitors become identified customers, plus the work of raising that rate: keeping what a guest did before login, reducing friction at sign-up, and testing authentication flows. Auth0 uses the term for its Identity Conversion Suite; other vendors describe the same goals in their own words.
What is an anonymous session?
An anonymous session gives a not-yet-identified visitor a session the identity platform knows about, so the application can attach carts, wishlists or preferences to it. When the visitor signs up or logs in, that data moves to their account instead of being lost.
Why A/B test login and sign-up flows?
Small changes, such as offering a passkey first, removing a field, or moving email verification later, change how many people finish. Testing inside the identity platform ties each variant to authentication events, so the result reflects real sign-in success rather than page views.
Is identity conversion an industry-standard term?
No. It is a vendor-coined label from Auth0. The measurable pieces underneath it, sign-up completion, sign-in success rate and guest-to-account merge rate, are standard funnel metrics that any CIAM team can track.
Related terms
In the guides
B2C Authentication Requirements: The Buyer's Checklist
A testable requirements list for consumer identity, covering registration conversion, passkeys, recovery, abuse defense, scale, and exit, with an acceptance test on every line.
Customer Onboarding and Progressive Profiling: The Conversion-Aware CIAM Pattern
Every field at signup costs conversion. Progressive profiling defers data collection to the moment of contextual need: better UX, better data quality, better GDPR posture, all at once.
The ROI of Passwordless Authentication: A CFO-Ready Business Case
Passwordless authentication pays back through three measurable lines: help-desk ticket reduction, breach-probability reduction, and conversion lift. The numbers are unflattering to passwords.