Azure Devops - Best way to create a burndown chart for an Epic

Hi MaseyBoy​, 

There is an extension named Great Gadgets (see https://marketplace.visualstudio.com/items?itemName=StonikByte.stonikbyte-great-gadgets-extension&ssr=false#overview) which nicely handles this case. It provides a Release Burndown Burnup Chart widget that uses a shared query as data source.

All you need to do is create a shared query that returns the items you want to track, in this case, stories and other work items under your epic(s). Then, configure the widget to use that query. Choose Story Points as the calculation method, set the desired time range, and you're all set.

Hope this helps.

D.