+\Gls{TOP} is a declarative programming paradigm with roots in functional programming that allows high-level interactive collaborative workflows to be specified for the work that needs to be done.
+From this specification, a ready-for-work computer program is generated supporting the user in actually performing the work.
+The main building blocks of \gls{TOP} programs are tasks, an abstract representation of work that needs to be done.
+During execution, the current value of a task is observable and other tasks can act upon it.
+Furthermore, tasks can be combined and transformed to create compound tasks, allowing the modelling of many collaboration patterns.
+Tasks running on edge devices can intuitively be built from the same \gls{TOP} concepts as the interactive collaborative applications \gls{TOP} was originally designed for, albeit with domain-specific primitives such as sensor and actuator access.
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+This dissertation shows how to orchestrate complete \gls{IOT} systems using \gls{TOP}.
+First I present advanced \gls{DSL} embedding techniques that make the creation of a \gls{DSL} such as \gls{MTASK} possible.
+Then I show \gls{MTASK}, a \gls{TOP} \gls{DSL} for \gls{IOT} edge devices.
+\Gls{MTASK} is embedded in \gls{ITASK}, a general-purpose \gls{TOP} language mostly used to program interactive web applications.
+All aspects of the \gls{MTASK} system are show: the design, implementation, integration with \gls{ITASK}, and a detailed overview of the green computing facilities.
+Using \gls{MTASK} in conjunction with \gls{ITASK}, entire \gls{IOT} systems can be programmed from a single source, in a single paradigm, and using a single high abstraction level.
+Finally, this tierless approach to \gls{IOT} systems is qualitatively and quantitatively compared to traditional tiered approaches.
+Dit is een samenvatting van 350--400 woorden.