Tech is the use of science and engineering to create practical solutions for everyday problems. It includes computing, software, the internet, social media, mobile technology, artificial intelligence, robotics, and cybersecurity. Tech has transformed the way we live, work, and interact with the world around us, and has created new opportunities for communication, entertainment, and education. However, it also presents challenges such as employment displacement, privacy concerns, and security risks. It is essential to use tech responsibly and ethically to create a better world for everyone.