The end to end traceability of a release from requirements through test cases down to defects leading to full accountability of QA projects and activities. The history feature for each and every change made to any of the components inside any of the modules helps for a complete audit trail of the QA processes. Review collected by and hosted on G2.com.
I personally liked the Defects module in the older QC 10.xx versions before the upgradation to ALM 11.xx version. The Review collected by and hosted on G2.com.



