Track the progress of work using Rollup columns

Introduced Rollup columns to the Azure Boards backlog view, enabling users to track progress and aggregate data (e.g., sum of story points, count of work items) based on parent-child work item relationships. This feature supports both out-of-the-box and custom rollups, offering 'Progress' (percentage of completed items) and 'Totals' (state-agnostic aggregation) types. The post details how to add these columns via 'Column Options', configure custom rollups for numeric fields, and provides examples of reading the data. Important notes cover latency, cross-project linking limitations, and how descendant links are always considered.