I can develop both client and server software. In addition to mastering HTML and CSS I also know how to: Program a browser, program a server, program a database. Client software; HTML CSS Bootstrap W3.CSS JavaScript ES5 HTML DOM JSON XML jQuery Angular React Backbone.js Ember.js Redux Storybook GraphQL Meteor.js Grunt Gulp Server software; PHP The advantage of being a full stack web developer is: You can master all the techniques involved in a development project You can make a prototype very rapidly You can provide help to all the team members You can reduce the cost of the project You can reduce the time used for team communication You can switch between front and back end development based on requirements You can better understand all aspects of new and upcoming technologies