Most development projects involve a wide range of environments. There is production, development, QA, staging, and then every developer's local environments. Keeping these environments in sync so your project runs the same (or runs at all) in each environment can be quite a challenge. There are many reasons for incompatibility, but using Docker will help you remove most of them.
Internet of Things (IoT) devices, computing devices that send and receive information via the Internet and that run very specific applications, can be anything from smart thermostats to smart TVs. The main advantage of IoT devices is their constant connectivity, which allows users to access information and control the devices remotely at any time.