11 top IoT online courses in 2025 (free and paid)

IoT is one of the most transformative technologies of the 21st century. It's powering advancements across industries, such as healthcare, transportation and manufacturing, as well as the supply chain. As a key driver of Industry 4.0, IoT enables smart automation and data-driven decision-making. According to Fortune Business Insights, the market is projected to grow from $714 billion in 2024 to $4,062 billion by 2032. Beyond its innovative products, tools and applications, IoT offers a wealth of