Google has expanded the ability of doing cross-account Google Ads analysis within the Report Editor within the Google Ads browser based console. Google allowed this in 2017 but it had to be done outside of Google Ads, now you can do it directly within Google Ads.
Before you haven't been able to visualize and manipulate your cross-account data directly in your browser. Instead, you had to download reports from your Manager account and open it in this editor, I believe. "To make it faster and easier for you to analyze this valuable cross-account data, the Manager account's Report Editor can now slice and dice your data in real time. With this update, you can now analyze and identify cross-account patterns in your data without leaving Google Ads," Google said.
Here is the example given by Google, let’s say that you manage three accounts in different regions and want to look at global performance over time. Previously, you would need to download performance for each account individually, and then stitch the data together to find global trends. Now, you can analyze this cross-account performance with custom tables, charts, and data segments directly in your browser.
It is limited to up to 10 accounts.
Bummer for agencies is it's currently limited to Manager accounts with no more than 10 accounts. https://t.co/k5oZSfyKh1
— Ginny Marvin (@GinnyMarvin) September 30, 2019
Forum discussion at Twitter.