IoT is a network of physical objects that are embedded with sensors, software, and other technologies that allow them to connect and exchange data with other devices and systems over the internet. These objects can range from everyday consumer devices like smartwatches and refrigerators to industrial equipment like manufacturing machines and oil rigs. Biotechnology If you have a knack for marketing and promoting products, you can earn a living through online marketing. Online marketing involves promoting products and services on the internet through various channels, such as social media, email marketing, and search engine optimization. You can work as an affiliate marketer, promoting other people's products and earning a commission on each sale, or you can work as a marketing consultant, helping businesses to improve their online presence and reach more customers.