No matter what type of architecture we are using, sometimes we will need to work with a great amount of data and apply some transformations to make it useful. This kind of processing usually happens when we need to consolidate (or simply process) data from one or many data sources, making it available for certain business purposes.

These batch processes require a well-defined set of steps for accomplishing the required goal. Using Spring Batch, you can implement them by using jobs that are composed of steps to read, process, and write the processed data. One job can have as many steps as required, as shown in the following diagram: