How do alexa and google analytics track demographics?

@hanna 

Alexa and Google Analytics track demographics using different methods.

1. Alexa Demographics: Alexa determines demographics by collecting data from users who have installed the Alexa browser extension or have enabled the Alexa toolbar in their browser. This data includes information like age, gender, education level, browsing history, and interests. The demographic information is aggregated and analyzed to provide insights into the demographics of a website's audience.
2. Google Analytics Demographics: Google Analytics uses the Google advertising cookies (such as the DoubleClick cookie) to track demographic information. When users visit a website with Google Analytics tracking code, the cookies collect data about the user's interests, age, and gender based on their browsing behavior across different websites that use Google's advertising services.

Both Alexa and Google Analytics provide aggregated and anonymized demographic information to website owners, allowing them to understand their audience better and make data-driven decisions for targeting, content optimization, and marketing purposes.