Aon, the leading global professional services firm providing a broad range of risk, retirement and health solutions, is opening an office in Cardiff, creating over 100 jobs.
Mae Aon, sef cwmni blaengar ym maes gwasanaethau proffesiynol byd eang sy'n darparu gwahanol wasanaethau risg, ymddeoliad ac iechyd, yn agor swyddfa yng Nghaerdydd.