Workflow

• A Workflow is a sequence of tasks that processes a set of data
• A workflow is a series of sequential tasks that need to be completed in order to reach a certain goal
• In context of Logic Apps:
  • A sequence of tasks that produce a specific outcome (the result might be: a decision orsome data or a notification)
  • A business process consists of a series of steps

Triggers and Actions

• Trigger:
  • A trigger is an event that will be fired when a specific set of conditions is satisfied
  • Triggers activate automatically when conditions are met
  • Types:
    • #1
      • Built-in triggers
      • Managed API triggers
    • #2
      • pull tigger
      • push trigger
• Action:
  • An action is an operation that executes a task
  • Actions are all the steps that happen after the trigger
  • Each action usually maps to an operation that’s defined by a managed connector, custom API, or custom connector.
  • Actions run when a trigger is fired/activated or another action is completed

Connector

• A connector is a component that provides an interface to an external service
• A connector is a container for related triggers and actions.
• Example:
  • Twitter connector sends and retrieves tweets
  • Outlook connector manages email, calendar, and contacts
• Connector calls API of the target service/app to get/set data
• Logic Apps provides hundreds of pre-built connectors and you can write custom connectors to access services that don’t have pre-built connectors (services must have a REST API)
• Connector list: https://docs.microsoft.com/en-us/azure/connectors/apis-list#connector-types

Relation between connector, trigger and actions

• Both trigger and action can be connectors
• A trigger kicks off an instance of Logic App
• When condition is met, action(s) are kicked off and produces an output or performs a task

Logic Apps Designer

• A graphical tool for creating your workflows
• A design canvas that you use to add a trigger and actions to your app
• A design tool to arrange pre-made components into the sequence you need
• The designer sends a definition of your workflow to the Logic Apps execution engine (to check conditions are right)

How do logic apps work?

• A specific event happens or meets specific criteria => a trigger is fired
• A trigger is fired => workflow starts
• Each time that the trigger fires => the Logic Apps engine creates a logic app instance that runs the actions in the workflow
• Actions can include:
  • data conversions
  • conditional statements
  • branching
  • loops
  • etc.