Big Data plays a crucial role in improving customer experience by enabling organizations to understand customer preferences, behavior, and expectations. Companies collect data from various sources, including social media platforms, online transactions, mobile applications, and customer feedback systems. By analyzing this data, organizations can create personalized marketing campaigns, improve product offerings, and enhance customer satisfaction. Retail and e-commerce companies extensively use Big Data analytics to provide personalized product recommendations and targeted promotions. Similarly, telecommunications companies use customer data to improve service quality and reduce customer churn rates. The hospitality and travel industry also benefits from Big Data by offering personalized travel experiences and improving customer service. Additionally, financial institutions use Big Data to analyze customer spending patterns and provide customized financial solutions. The integration of AI and machine learning technologies has further enhanced customer experience by enabling real-time data analysis and automated customer support through chatbots and virtual assistants. However, maintaining customer trust is essential, as data privacy concerns continue to grow. Organizations must implement strong data protection measures and comply with regulatory standards to ensure customer data security. As businesses continue to prioritize customer-centric strategies, Big Data will remain a key driver of customer experience improvement across industries.