Firebase is a powerful API to store and sync data in realtime helping front-end developers build realtime apps for the web. You can save data, update data, and listen for data changes in realtime with only a few lines of code. Data is stored as standard JSON and is accessible from any platform. Firebase also has safety and security built in to keep your data and your users data safe.
Adding Firebase to the page
In order to use Firebase in your application you have to incluse the firebase js reference in the page header.
<script src="https://cdn.firebase.com/js/client/2.0.2/firebase.js"></script>


In this approach, the process, from definition of a task to its delivery to the customer, is displayed for participants to see, team members pull work from a queue.

changing customer requirements. As a type of agile software development, it advocates frequent “releases” in short development cycles, which is intended to improve productivity and introduce checkpoints at which new customer requirements can be adopted.
development team works as a unit to reach a common goal”, challenges assumptions of the “traditional, sequential approach” to product development, and enables teams to self-organize by encouraging physical co-location or
That person creates a ranked product backlog that the cross-functional team takes.The team, which has all the roles it requires, works off the backlog and creates features, producing shippable product on a regular basis.