So, Amazon Lightsail is a VPS (Virtual Private Server) service which gives you templates to choose from, you can either choose a Plain OS or an OS with a pre-baked application, ready to be used with a click of a button.
Want more? The prices start at 5$ a month!
So, no need of worrying about the underlying infrastructure, just launch your application, and start building your idea, it’s that simple!
Check this out for a detailed explanation: https://www.edureka.co/blog/amazon-lightsail-tutorial/