Big data is growing exponentially and will reach 40ZB by 2020, doubling every two years. Most companies are using or planning to use big data, seeing it as an opportunity. Analytics of big data can provide insights to increase productivity and profits. However, big data also poses security and privacy challenges under regulations like GDPR which grant individuals more control over and access to their personal data. New technologies like AI and cloud are helping companies address these issues to transform with data while respecting privacy.