This pattern provides code samples and steps to help you build an advanced tool for browsing and reviewing your mainframe fixed-format files by using AWS serverless services. The pattern provides an example of how to convert a mainframe input file to an Amazon OpenSearch Service document for browsing and searching. The file viewer tool can help you achieve the following:
Retain the same mainframe file structure and layout for consistency in your AWS target migration environment (for example, you can maintain the same layout for files in a batch application that transmits files to external parties)
Speed up development and testing during your mainframe migration
Support maintenance activities after the migration
