1. Login to your AWS console.
2. Navigate to the AWS Lambda service.
3. Click on the checkbox next to the Lambda function that you want to remediate.
4. Click on the “Add/Edit Tags” button at the top of the page.
5. In the “Key” field, enter a tag key (e.g. “Environment”) that describes the function’s purpose or environment.
6. In the “Value” field, enter a tag value (e.g. “Production”) that provides additional information about the function.
7. Click on the “Add” button to add the tag to the function.
8. Repeat steps 5-7 for any additional tags that you want to add.
9. Once you have added all necessary tags, click on the “Save” button to save the changes.

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1. Open the AWS CLI on your local machine.
2. Use the following command to list all the Lambda functions in your AWS account:
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   aws lambda list-functions
   

3. Identify the Lambda functions that do not have tags associated with them.
4. Use the following command to add tags to a Lambda function:
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   aws lambda tag-resource --resource-arn arn:aws:lambda:<region>:<account-id>:function:<function-name> --tags Key=<tag-key>,Value=<tag-value>
   

   Replace <region> with the AWS region where the Lambda function is located, <account-id> with your AWS account ID, <function-name> with the name of the Lambda function that needs to be tagged, <tag-key> with the name of the tag you want to add, and <tag-value> with the value of the tag you want to add. For example:
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   aws lambda tag-resource --resource-arn arn:aws:lambda:us-east-1:123456789012:function:my-function --tags Key=Environment,Value=Production
   

   This command will add a tag to the Lambda function named “my-function” with the key “Environment” and the value “Production”.
5. Repeat step 4 for all the Lambda functions that do not have tags associated with them.
6. Verify that all the Lambda functions have tags associated with them by using the following command:
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   aws lambda list-tags --resource arn:aws:lambda:<region>:<account-id>:function:<function-name>
   

   Replace <region>, <account-id>, and <function-name> with the appropriate values. This command will list all the tags associated with the Lambda function. If the Lambda function has tags associated with it, the output will show the tags. If the Lambda function does not have tags associated with it, the output will be empty.
7. Once you have verified that all the Lambda functions have tags associated with them, the remediation is complete.

1. First, import the necessary AWS SDK for Python (Boto3) library:

import boto3

2. Then, create a Boto3 client for AWS Lambda:

lambda_client = boto3.client('lambda')

3. Next, use the list_functions() method to get a list of all Lambda functions in your account:

response = lambda_client.list_functions()
functions = response['Functions']

4. Loop through each Lambda function and check if it has any tags. If not, add a tag with a key-value pair of your choice (e.g. “Environment”: “Production”):

for function in functions:
    function_arn = function['FunctionArn']
    tags = lambda_client.list_tags(Resource=function_arn)['Tags']
    if not tags:
        lambda_client.tag_resource(Resource=function_arn, Tags={'Environment': 'Production'})

5. Finally, run the Python script and verify that all Lambda functions now have tags:

python lambda_tagging.py