Which of the following limits applies to AWS Lambda regarding package size?

AWS Lambda has specific limits related to the deployment package size that developers must be aware of when building serverless applications. The correct limit for an AWS Lambda function is indeed 50 MB when compressed and 250 MB when uncompressed.

The compressed size refers to the size of the deployment package that you upload to AWS Lambda (for example, as a .zip file) and must not exceed 50 MB. Once unpacked, the total size of the uncompressed code and dependencies cannot exceed 250 MB. This limit is critical as it helps ensure efficient remaining Lambda execution and deployment performance.

Understanding these limits is essential for developers, as exceeding them could result in deployment failures or necessitate the need to redesign applications to stay within the specified constraints. In practice, this often leads to structuring the application code and dependencies effectively to fit within these limits while still achieving desired functionality.

This information is relevant for designing, optimizing, and troubleshooting AWS Lambda functions, especially when managing larger applications or considering the inclusion of additional libraries and modules within the deployment package.