To track hundreds of websites all at once with Google Analytics, you can use the Google Analytics 360 Suite, which is a paid enterprise-level solution offered by Google.
With the Google Analytics 360 Suite, you can use the "Roll-Up Reporting" feature to combine data from multiple websites into a single view. This allows you to see the aggregate data for all of your websites in one place, which can be very useful for analyzing trends and identifying patterns across your entire web presence.
To set up Roll-Up Reporting in the Google Analytics 360 Suite, you will need to create a new property for each of your websites and then create a new Roll-Up property that will collect data from all of the individual properties. You will also need to set up filters to ensure that the Roll-Up property only includes the data that you want to analyze.
If you are using the free version of Google Analytics, you can still track multiple websites, but you will need to create a separate Google Analytics account for each website and then log in to each account separately to view the data. This can be time-consuming and inefficient if you have a large number of websites to track.
Unfortunately, there is no built-in way to track hundreds of websites at once with the free version of Google Analytics. However, there are a few workarounds you can consider:
It's important to carefully plan and implement your tracking strategy to ensure data accuracy and maintain organization when dealing with a large number of websites.
Additionally, you can use the following approaches to track multiple websites at once with Google Analytics:
Remember to review and comply with any privacy and data protection regulations when implementing tracking across multiple websites, and ensure that you have obtained the necessary consent from your users if applicable.