This tutorial guides developers in making an SMS-based queue management application with Python and Flask more production-ready by Dockerizing it and deploying it to Heroku. The application uses a virtual phone number, Vonage API account, and a Postgres database for scalability. To make the application secure, secrets are managed using environment variables, and sensitive information is stored in a .env file. The tutorial covers setting up a Dockerfile, configuring an application server with Gunicorn, and deploying the container to Heroku. With these steps, developers can create a production-ready application that is easily scalable and replicable.