What is defined as the ability to transfer applications between cloud providers without altering their code?

The ability to transfer applications between cloud providers without altering their code is defined as application portability. This concept is crucial in cloud computing as it enables organizations to maintain flexibility and avoid vendor lock-in by allowing them to easily move their applications across different cloud environments. When applications are portable, they can run in multiple cloud environments seamlessly, leading to greater agility, cost efficiency, and scalability.

Portability ensures that applications can leverage the resources and services of various cloud providers, which can be particularly beneficial if a specific provider cannot meet an organization's changing needs or if there are better pricing options available from another provider. This characteristic is vital for enterprises looking to optimize their cloud strategies.

Other options, while related to applications in cloud computing, do not convey the same meaning. Application scaling refers to adjusting resources to handle changing loads, application redundancy focuses on creating backups to ensure availability, and application integration involves connecting different applications to work together. These concepts are important but pertain to different aspects of cloud architecture and management rather than the specific capability of transferring applications across environments without code modification.