Gathering data from the various source into one place - Piecing the data together according to the determined setting - Cleaning the data from the noise or erroneous, missing elements .For example, exploring the Kaggle Movies dataset and answers some interesting questions like which countries produce most movies, profitability analysis, kind of movies are most produced, most produced genres etc ,or what if you have an affiliate advertising network, and you need to gather performance statistics for the current stage of the marketing campaign. I provide you also concise insights and visualization to make sure everything is clear and easy to follow up.