Consider the following use case.

Musicality is a small startup developing a new smartphone application for music

recommendation per location. Musicality has a small team of $6$ developers working in

parallel to implement the software application as fast as possible.

The project manager wants to adopt an agile software development process for continuous

integration and deployment. Another critical requirement is an easy way to manage the

production environment for orchestrating resources using developer platforms and

codebase repositories.

What three tools or technologies do you suggest Musicality use and why?