Description: A function version in AWS Lambda refers to a specific iteration of a function that has been deployed in Amazon Web Services’ serverless computing environment. Each function version is immutable, meaning that once published, it cannot be modified. This allows developers to manage and control the behavior of their applications more effectively, as they can invoke specific versions of a function instead of relying on the latest deployment. Function versions are particularly useful for version control and rolling out new features, as they allow for testing and validation in a production environment without impacting end users. Additionally, AWS Lambda enables developers to assign aliases to versions, making it easier to manage different environments such as development, testing, and production. This versioning and aliasing capability provides greater flexibility and security in cloud application development, allowing development teams to implement changes in a controlled manner and revert to previous versions if necessary.
