key
A credential that identifies an AWS account or user to AWS (such as the AWS secret access key).
key pair
A set of security credentials that you use to prove your identity electronically. A key pair consists of a private key and a public key.
key prefix
A logical grouping of the objects in a bucket. The prefix value is similar to a directory name that enables you to store similar data under the same directory in a bucket.
kibibyte
(KiB)
A contraction of kilo binary byte, a kibibyte is 2^10 or 1,024 bytes. A kilobyte (KB) is 10^3 or 1,000 bytes. 1,024 KiB is a mebibyte.
KMS
See AWS Key Management Service (AWS KMS).