create the needed infra code to deploy the code on AWS

To avoid reaching the database each time that the posts endpoint is called, please add a cache layer to optimize resources.

To avoid some DoS attacks, please add a rate limit to all endpoints.

Instead of getting a collection of records from the database each that the endpoints are reached, try to get just one record to do the algorithm-required verification.

please avoid 👇
Model::get()

Try to let the controllers as clean as possible

create a command that receives an email and creates a CSV file containing all the posts registered on the system and at the end sends a notification to the user with given email

Please, try to maintain in the project a clear folder structure

A good option would be the Laravel Ray

Invalidate posts cache once a post is created