Google+ Sign-In button allows users to authenticate on websites using their Google+ account.
Google+ platform websites integration using the Google+ platform tag.
Express is a fast, unopinionated, minimalist web framework for Node.js
Heroku provides you with all the tools you need to iterate quickly, and adopt the right technologies for your project.
Amazon hosting services.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.