Migrating from Segment to RudderStack

Migrate from Segment to RudderStack.

This document explains the step-by-step process of migrating from Segment to RudderStack. It covers the necessary steps for replacing your instrumentation code and start using the RudderStack SDKs to track your events with minimal code changes.

Migrating the workspace

After creating a RudderStack account, you will see the following dashboard containing your data plane URL:

RudderStack data plane URL

Similar to Segment, you will need to set up your source-destination connections in the dashboard and facilitate the event data flow.

Keep your source write key and the data plane URL handy.

If you need more support or want us to manage your hosting, contact us.

Updating the SDK implementation

Depending on the platform, follow these steps to move your existing SDK implementation to RudderStack:

Backfilling Segment anonymous IDs

When migrating from Segment or a similar analytics tool, you might already have some anonymous traffic that has not yet been identified. When Segment and RudderStack track events for non-identified users, both assign a random UUID as an anonymousId. This ID is used to track an unknown user until they are identified. It also allows RudderStack to track user behavior, journeys, and first-touch attribution before and after the users are identified.

Capturing Segment anonymousId automatically

You can automatically capture the Segment anonymousId and set it as RudderStack anonymousId using the JavaScript SDK’s anonymousIdOptions object. When enabled, it reads the Segment anonymousId from your local storage (localStorage) or the Segment cookie and sets it accordingly.

For more information on how to enable the anonymousIdOptions object, refer to the Capturing anonymousId automatically section.

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