Firebase, in technical terms, is backend as a service. To clarify what this means, let's look at an example: Let's say you would like to write an app, which shows screening times for various movies playing in the city. For this, you will need to store the movie details and the show times in a backend, which can then later be fetched and displayed by various mobile clients. However, you don't want to get into writing a full-fledged server on your own and it would probably be best if you could lay your hands on a pre-cooked solution where you could just store and read your data when needed. This is where Firebase comes in. Firebase is a technology/service that helps developers who want to write apps, which interact with a backend but avoids them creating/programming their own full-fledged backend. This will become clearer as we set up Firebase to use with our Android client.
Apart...