You know you have a distributed system when the crash of a computer you have never heard of stops you from getting any work done. _LESLIE LAMPORT
A distributed system is a collection of autonomous computers linked by a computer network that appear to the users of the system as a single computer.
Internet of Things (IoT)
The Internet of Things (IoT) is the network of physical objects or "things" embedded with electronics, software, sensors and connectivity to enable it to achieve greater value and service by exchanging data with the manufacturer, operator and/or other connected devices. Each thing is uniquely identifiable through its embedded computing system but is able to interoperate within the existing Internet infrastructure.