The use of header tags, such as H1, H2, and H3, can help improve a site's visibility in search results by providing structure and hierarchy to content. Sites that use header tags to organize their content are more likely to rank higher than those that don't. Join now Internet of Things (IoT) is a network of physical objects, such as sensors and appliances, that are connected to the internet and can communicate with each other. IoT is used in many applications, such as home automation, healthcare, and transportation. Popular IoT platforms include AWS IoT, Google Cloud IoT, and Azure IoT.