In cloud computing, Amazon Web Services (AWS) provides robust solutions for secure data storage and management through its Simple Storage Service (S3). Coupled with AWS Cognito, a service that provides authentication, authorization, and user management, developers can create seamless and secure workflows for uploading data directly to S3 from a website. This blog post explores achieving this using an unauthenticated Cognito identity pool.
https://businesscompassllc.com/how-to-ingest-incoming-office-365-emails-to-aws-s3-using-aws-lambda-and-cloudwatch-alarm/