# Beginner stuff <iframe width="560" height="315" src="https://www.youtube.com/embed/eVSfJhssXUA" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> ## Big data in practice [In Practice](https://www.bernardmarr.com/default.asp?contentID=1076#:~:text=Big%20data%20is%20used%20to%20improve%20many%20aspects%20of%20our,social%20media%20and%20weather%20data.) [Big Data for Businesses](https://searchdatamanagement.techtarget.com/The-ultimate-guide-to-big-data-for-businesses) :::info **What does a business analyst or data analyst for a business do?** Understanding customers' needs has never been more important, and now never more possible to achieve deeper understanding through stronger use of data.A business analyst can improve processes, advertising campaigns, reduce cost, achieve better financial results, etc. all by utilizing data properly. :::