Turn anonymous users into known users

Automatically connect anonymous behaviors to known users, giving you full visibility into the user journey.

Join top companies who stream data through RudderStack

Cross-device tracking built for developers

Let our SDKs do the work

Our SDKs automatically generate anonymous identifiers and associate them with known users when you run our identify method.

Don’t waste any time on integrations work

Whenever new user traits are added through our SDK, we automatically update user profiles in all of the downstream destinations you’ve connected in RudderStack.

Customize trait mappings by destination

Don’t worry if a downstream team changes a field name. With RudderStack you can rename traits on the fly by destination without having to re-instrument events.


When it came down to deciding the right solution, there wasn’t a question. We chose RudderStack as the foundation for our warehouse native customer data platform to enable data-driven personalized engagement online.

Chris Frye, Director of Digital Architecture, Crate & Barrel

Key features

Powerful and flexible tooling to unlock the complete customer journey

16 SDKs

Robust, flexible user identification method

Track logged-in state

Support for multiple unique identifiers

Customize trait mapping by destination

180+ Out of the box destination integrations

Top User Identification use cases

Complete visibility into the customer journey

Identify anonymous visits and associate them with known users to track them across your web and mobile properties.

Provide analysts and data science with raw first-party data

By routing events to your warehouse or data lake, you can give your analytics and data science teams access to raw first party data for the entire customer journey.

Deliver consistent user profiles to every team

Sending consistent profile updates from our SDK to every destination means that marketing, product and customer success can operate from the same source of truth.

Customer loved, industry awarded

Get started today

Start building smarter customer data pipelines today with RudderStack.
Our solutions engineering team is here to help.