Examples and best practices for successful aio-lib-files implementations

Dear Firefly team,

We have seen an increasing number of use-cases where a Marketing automation Platform such as Campaign Standard or Marketo would need to integrate with external systems using Firefly libraries to achieve it. Below a typical example:

1. Campaign Standard generates a file containing Marketing data e.g. An audience or Messages to be sent
2. Campaign Standard upload this file on an Amazon S3 bucket
3. Campaign Standard invokes a Runtime sequence to:
- Parse the generated file
- Prepare & execute Bulk API requests for external systems (e.g. a CRM Platform or social networks)
- Create a new file with rejects and alert administrator

It would be very helpful if you could provide some best practices or an example leveraging the **aio-lib-files** library.

Let me know if you need more details.
Ludovic

Start by reviewing the existing aio-lib-files documentation and the S3-to-Runtime workflow described in the issue. Define a concrete example covering file parsing, bulk requests, reject-file creation, and administrator alerts; done means the best practices and example are documented for this integration. The issue names no target documentation file or test, so locate the appropriate docs entry point before editing.

Written by the indexing model from the issue text.