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The lambda function is built using as jenkins job (TODO put reference) that builds the a zip package containing the python code for the lambda(s) and uploads it to artifactory (https://sagebionetworks.jfrog.io/artifactory/lambda-artifacts/org/sagebionetworks/virus-scanner/). our jfrog repository as a generic artifact. The stack builder creates a dedicated stack for the lambda(s) downloading the zip artifact and uploading to an S3 bucket so that it can be referenced by the function(s), additionally each bucket that need scanning is configured to send notifications after an a multipart upload to the SNS topic that the scanner function is triggered by.
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