Mayank kaintura presents slides on big data to Miss Isha Pant. He thanks her for the opportunity to explore the concept beyond the syllabus, which helped him gain a good score and clearer understanding. Big data is growing exponentially as more devices generate data. It requires different techniques than traditional data due to its large size and diverse formats like text, images, videos. Organizations are using big data to gain insights, improve products/services, and make better decisions. It is an important and challenging area for IT with many job opportunities.