Overhauled gateways for api v1 and added gateways for api v2

Author: jaboehri

docs/src/process-development/api-v1/bpmn/gateways.md

@@ -5,12 +5,16 @@ icon: creative
 
 ### Gateways
 
-[Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/) allow you to control the [Sequence Flow](sequence-flow.md). Different types of gateways are useful for different scenarios.
+[Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/) allow modelling of decision-based and concurrent workflows. [Exclusive Gateways](#exclusive-gateways) model a decision where one flow gets pursued over other flows. [Event-based Gateways](#event-based-gateways) also model a decision, but are based on events. [Parallel Gateways](#parallel-gateways) model concurrency.
 
 #### Exclusive Gateways
 
-[Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) allow you to decide which [Sequence Flow](sequence-flow.md) should be followed based on [conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions). [Conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions) are not part of the [Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) themselves. You set them through the sequence flow exiting the [Exclusive Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/).  In the [Camunda Modeler](https://camunda.com/download/modeler/), you can add conditions to [Sequence Flow](sequence-flow.md) by selecting a [Sequence Flow](sequence-flow.md) and opening the `Condition` tab. You can find more information on how to use Conditions [here](conditions.md).
+[Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) decide which one out of multiple [Sequence Flow](sequence-flow.md) should be followed based on [conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions). [Conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions) are not part of the [Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) themselves. They are set through the sequence flow exiting the [Exclusive Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/).  In the [Camunda Modeler](https://camunda.com/download/modeler/), you can add conditions to [Sequence Flows](sequence-flow.md) by selecting a [Sequence Flow](sequence-flow.md) and opening the `Condition` tab. You can find more information on how to use Conditions [here](conditions.md).
 
-#### Event-based Gateway
+#### Event-based Gateways
 
-The [Event-based Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/event-based-gateway/) allows you model scenarios where you are expecting one out of a number of events to occur. 
+The [Event-based Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/event-based-gateway/) models a decision in the workflow. But instead of [conditions](./conditions.md), the [Event-based Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/event-based-gateway/) uses the triggering of an event to dicide which [Sequence Flow](sequence-flow.md) to pursue.
+
+#### Parallel Gateways
+
+[Parallel Gateways](https://docs.camunda.org/manual/latest/reference/bpmn20/gateways/parallel-gateway/) model concurrent workflows. Their outgoing flows can be joined together again with another [Parallel Gateway](https://docs.camunda.org/manual/latest/reference/bpmn20/gateways/parallel-gateway/). This makes process execution wait for both flows to arrive at the gateway before continuing.

docs/src/process-development/api-v2/bpmn/gateways.md

@@ -0,0 +1,20 @@
+---
+title: Gateways
+icon: creative
+---
+
+### Gateways
+
+[Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/) allow modelling of decision-based and concurrent workflows. [Exclusive Gateways](#exclusive-gateways) model a decision where one flow gets pursued over other flows. [Event-based Gateways](#event-based-gateways) also model a decision, but are based on events. [Parallel Gateways](#parallel-gateways) model concurrency.
+
+#### Exclusive Gateways
+
+[Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) decide which one out of multiple [Sequence Flow](sequence-flow.md) should be followed based on [conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions). [Conditions](https://docs.camunda.org/manual/7.21/user-guide/process-engine/expression-language/#conditions) are not part of the [Exclusive Gateways](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/) themselves. They are set through the sequence flow exiting the [Exclusive Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/exclusive-gateway/).  In the [Camunda Modeler](https://camunda.com/download/modeler/), you can add conditions to [Sequence Flows](sequence-flow.md) by selecting a [Sequence Flow](sequence-flow.md) and opening the `Condition` tab. You can find more information on how to use Conditions [here](conditions.md).
+
+#### Event-based Gateways
+
+The [Event-based Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/event-based-gateway/) models a decision in the workflow. But instead of [conditions](./conditions.md), the [Event-based Gateway](https://docs.camunda.org/manual/7.21/reference/bpmn20/gateways/event-based-gateway/) uses the triggering of an event to dicide which [Sequence Flow](sequence-flow.md) to pursue.
+
+#### Parallel Gateways
+
+[Parallel Gateways](https://docs.camunda.org/manual/latest/reference/bpmn20/gateways/parallel-gateway/) model concurrent workflows. Their outgoing flows can be joined together again with another [Parallel Gateway](https://docs.camunda.org/manual/latest/reference/bpmn20/gateways/parallel-gateway/). This makes process execution wait for both flows to arrive at the gateway before continuing.