# Core Nodes

Core nodes form a backbone of any flow and are used to implement logical and other operations essential to formulating its business logic.

* [Assign](core/assign)
* [Exception Handler](core/exception-handler)
* [Function Call](core/function-call)
* [If](core/if)
* [In](core/in)&#x20;
* [Iterator](core/iterator)
* [Out](core/out)
* [Raise Exception](core/raise-exception)
* [Subflow](core/subflow)
* [Switch](core/switch)
* [Validator](core/validator)
