A Lambda deployment package comprises of your Lambda handler code containing the business logic and other dependency modules and binaries. There are two supported ways to provide your deployment package - zip archive file or container images.
In this video, I have demonstrated how to create a Lambda deployment package containing the latest boto3 version and uploaded it as a zip archive file for a Lambda function with python runtime.
[1] Lambda deployment packages - https://docs.aws.amazon.com/lambda/la...
Note: Not endorsed by Amazon, all my opinion.