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.
Update the references to the analytics keyword in your application code with rudderClient.
You can use the rest of your code without any changes as the RudderStack API is fully compatible with Segment.
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
cookies, the cookies that are categorized as necessary are stored on your browser as they are as
for the working of basic functionalities of the website. We also use third-party cookies that
analyze and understand how you use this website. These cookies will be stored in your browser
consent. You also have the option to opt-out of these cookies. But opting out of some of these
have an effect on your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This
category only includes cookies that ensures basic functionalities and security
features of the website. These cookies do not store any personal information.
learn more about cookies and why we use them, visit our cookie
policy. We'll assume you're ok with this, but you can opt-out if you wish Cookie Settings.