BC|Link software is installed behind the firewall of each Data Partner which holds the pseudo-anonymised version of the data the Data Partner wishes to make discoverable. BC|Link facilitates the Data Partner to answer the queries stored on the HDR Cohort Discovery platform by systematically applying a standardised mechanism to anonymise the data by running queries that return a simple count and/or distribution to a question. In the examples of TREs, this software is installed within the secure environment of the TRE.