1) Big data refers to the large and complex data sets that are difficult to analyze using traditional data processing applications. It includes data from digital sources like the web and social media as well as traditional sources like business transactions.
2) Big data is characterized by its volume, velocity, and variety. It allows organizations to store, manage, and analyze vast amounts of disparate data in real-time to gain valuable insights.
3) While big data opens opportunities to customize experiences and automate decisions, fully leveraging it presents challenges around skills, infrastructure, understanding its benefits, and privacy issues that must still be addressed.