explain how Agile development is a quick development, suited to projects, is reliable, and is more affordable

Reference:

https://wisdomplexus.com/blogs/rapid-application-development-vs-agile/

https://hopinfirst.com/agile-vs-rad-vs-waterfall/

Lower cost, high satisfaction, shorter delivery time:https://www.ukessays.com/essays/management/rapid-application-development-vs-agile-methodologies.php

Sustainable:https://www.cio.com/article/3156998/agile-project-management-a-beginners-guide.html