REST APIs with Flask and Python - What is Heroku?

The video introduces Heroku, a web service for hosting applications, explaining its use of Dynos, which are virtual machines similar to servers. It covers running applications on Heroku, including using uwsgi for serving Flask apps, and configuring databases. The video also discusses scaling with multiple Dynos and highlights Heroku's security features like SSL. Finally, it concludes with a brief overview of deploying apps on Heroku.

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