To create a Lambda function

The following create-function example creates a Lambda function named my-function.

aws lambda create-function \
    --function-name my-function \
    --runtime nodejs10.x \
    --zip-file fileb://my-function.zip \
    --handler my-function.handler \
    --role arn:aws:iam::123456789012:role/service-role/MyTestFunction-role-tges6bf4

Contents of my-function.zip: This file is a deployment package that contains your function code and any dependencies.

Output:

{
    "TracingConfig": {
        "Mode": "PassThrough"
    },
    "CodeSha256": "PFn4S+er27qk+UuZSTKEQfNKG/XNn7QJs90mJgq6oH8=",
    "FunctionName": "my-function",
    "CodeSize": 308,
    "RevisionId": "873282ed-4cd3-4dc8-a069-d0c647e470c6",
    "MemorySize": 128,
    "FunctionArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function",
    "Version": "$LATEST",
    "Role": "arn:aws:iam::123456789012:role/service-role/MyTestFunction-role-zgur6bf4",
    "Timeout": 3,
    "LastModified": "2019-08-14T22:26:11.234+0000",
    "Handler": "my-function.handler",
    "Runtime": "nodejs10.x",
    "Description": ""
}

For more information, see AWS Lambda Function Configuration in the AWS Lambda Developer Guide.