This document discusses how IoT can help achieve Bangladesh's Digital Bangladesh Vision 2021. It outlines the evolution of industrial revolutions from mechanization to today's IoT-driven Industry 4.0. IoT is defined as an ecosystem of connected physical objects accessible via the internet. The document then details the life cycle of collecting data, communicating, analyzing and acting on that data with IoT. It lists several application areas for IoT in Bangladesh like smart homes, cities, agriculture and more. Reasons for adopting IoT include remote monitoring and control to improve efficiency. Finally, it outlines how major telecom companies in Bangladesh are developing IoT solutions for industries like transportation, utilities and manufacturing.