applications that can take advantage of the connected physical
world.
In this paper we derive the requirements of loT mashup
toolkits from several representative existing systems and our
experience with a platform we've developed called the Web of
Things Toolkit (WoTKit). Based on three years of experience
with this system and other systems [9-11], we derive key
lessons learned to share with the community. These lessons
aim to shape the future evolution of WotKit but also, we hope,
help shape and improve other toolkits and contribute to the
vision of the loT as a foundation for novel and innovative new
applications and services.