Pipeline aggregations are higher order aggregations that can aggregate the output of other aggregations. These are useful for computing something, such as derivatives. We will look at some pipeline aggregations later in this chapter.

This was an overview about the different types of aggregations supported by Elasticsearch at a high level. Pipeline aggregations and matrix aggregations are relatively new and have fewer use cases compared to metric and bucket aggregations. We will look at metric and bucket aggregations in greater depth later in this chapter.

In the next section, we will load and prepare data so that we can look at these aggregations in more detail.