S3 data consistency model provides strong read after write consistency for PUT and DELETE requests of objects in the S3 bucket.

Objects consist of the following:

Key – this is simply the file name of the object.

Value – the data and is made up of a sequence of bytes.

Versioning – which version of the object is this

MetaData – Additional information about the data file you are storing.

Think, if you are storing a music track/song. This would have metadata like the information of the singer, the year it was released, the name of the album, etc.