Canada

https://www.canada.ca/en/government/system/digital-government/digital-operations-strategic-plan-2018-2022.html#ToC10_3
https://www.canada.ca/en/treasury-board-secretariat/news/2018/01/government_of_canadaannouncesanewagileprocurementinitiative.html
https://open.canada.ca/en/blog/agile-procurement-better-digital-solutions
https://www.linkedin.com/pulse/agile-procurement-public-sector-primer-emilio-franco

https://twitter.com/TDAndrea23/status/1096455913983098881
https://www.tpsgc-pwgsc.gc.ca/app-acq/ma-bb/appagile-proagile-eng.html

USA