Data blending as the name suggests simply means to blend or combine data from multiple sources. This data is then unified together to form up a single data set. The different sources can be excel files, SQL databases, google analytics, and data from many data sources can be merged into one huge data set. The benefit of this technique is that you can easily integrate, analyze and aggregate data from multiple sources all at once. This allows you to get useful insights from the data to help make more accurate business decisions.