Demo app introduction

- [Instructor] In order to demonstrate the functionality…of the various AWS application deployment services,…we need a demo application.…My Art Gallery is a very simple Ruby on Rails app…that lets me keep track of my favorite works of art.…It has one database model to store those works of art.…You can create, update, and delete records.…This course demonstrates AWS deployment tools…through the lens of this app, though some…of the application's specific steps may vary.…For web apps built in other languages,…the concepts associated with the AWS deployment services…will carry over from language to language,…framework to framework.…

Here's what the app looks like.…To run this app, we need Ruby and Ruby Gems installed,…plus Bundler, the Ruby package manager.…Chances are good you have the first two.…To check on whether you have Bundler,…you can say Bundle dash V.…If you need to install it, you can use Ruby Gems…by saying gem install bundler.…There's a file called a gem file in this application.…Inside the gem file, there's a list of dependencies…