Resource elasticity is the correct AWS value proposition that describes the ability to scale infrastructure based on demand. This refers to AWS's capability to automatically provision and de-provision resources as needed, allowing users to scale up during peak demand and scale down during low usage periods. This provides cost efficiency and operational flexibility.

• Speed of innovation: Focuses on how quickly new features and services can be developed and deployed
• Decoupled architecture: Refers to designing systems with independent components that can be developed and scaled separately
• Global deployment: Describes AWS's worldwide infrastructure footprint and ability to deploy applications globally