Official aws cli client is written in python and supports every aws feature, so you could not go wrong with that. I wouldn't touch PHP and Node - to fragile and

Official aws cli client is written in python and supports every aws feature, so you could not go wrong with that. I wouldn't touch PHP and Node - to fragile and messy to depend on them. So API-wise python would be my first choice, java second. Maybe Go if you need native performance (if you don't know then you probably don't).