Use Open Source software as 1st choice when possible & pass redundant equipmement to community orgs
To use Open Source operating systems and softwhere as a first choice whenever possible and not to rollover to a propriatary supplier.
To consider the carbon footprint of equipment use and either extend its life within government or pass it for reuse by community and voluntary sector organisations
Dave Levy commented
It is probably more important that data is held in open data formats, or formats that can be interpreted by multiply sourced open source code. There's no point opening government data if you don't control the data format license or the license of the code that reads the data. Government data should not be put into proprietary data formats.