We have seen a high-level working of Elasticsearch via some basic examples. Let's put Elasticsearch to work with other components for our single customer view use case in the following sub-sections. This time we will be storing the data in PARQUET format and since this is one of our last examples with all components working together, we will try to build the Data Lake from scratch to understand the sequence of integrations involved starting with data preparation. We will only cover main commands as you can always refer to the previous chapter for more details if needed.