Deployment needs an execution role and the programmatic user needs certain permissions.

Execution Role

1. Create a role with the AWSLambdaBasicExecutionRole policy.

Programmatic User Permissions

This is the minimum policy required for deployment from Visual Studio.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": [
                "lambda:CreateFunction",
                "lambda:GetFunctionConfiguration",
                "lambda:UpdateFunctionCode",
                "lambda:ListEventSourceMappings",
                "lambda:InvokeFunction"
            ],
            "Resource": [
                "arn:aws:lambda:ca-central-1:748209819571:function:*"
            ]
        },
        {
            "Sid": "VisualEditor1",
            "Effect": "Allow",
            "Action": "lambda:ListEventSourceMappings",
            "Resource": "*"
        },
        {
            "Sid": "VisualEditor2",
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::748209819571:role/LambdaFunctionRole"
            ]
        }
    ]
}