In plain terms. AIDAR is the U.S. Agency for International Development's supplement to the FAR, adding USAID-specific acquisition rules for overseas development work.
Who it applies to. Contractors and implementing partners on USAID programs.
What it requires. Comply with the FAR, then AIDAR additions. International development work involves personal and program data across jurisdictions, so expect privacy and safeguarding requirements, plus attention to local data considerations.
Why it matters. Operating across borders adds data-handling complexity to USAID contracts on top of the FAR baseline.
Citation. AIDAR, the Agency for International Development Acquisition Regulation supplement to the Federal Acquisition Regulation (FAR), codified in the FAR System at Title 48 of the C.F.R.