Send Events from AWS Back to Salesforce Using an API Destination

An API destination is the target of a rule, and it enables you to route events to HTTP endpoints. Specifically, you can use an API destination to publish an event to Salesforce from EventBridge using REST API.

• Create a Connected App in Salesforce for OAuth
  To use OAuth to authorize the API call to Salesforce, set up a connected app in Salesforce. The connected app generates a consumer key and secret that you can store in the EventBridge connection in AWS.
• Create an API Destination and Connection in EventBridge
  Create an API destination that uses a new connection. In this case, the API destination is a REST API call to Salesforce to publish a platform event back. The connection contains the authentication information for the API call. The connection accepts several authorization methods.
• Create an EventBridge Rule and Connect it to the API Destination
  The EventBridge rule routes events from the event bus to the API destination, which results in making a REST call to publish an event back to Salesforce.
• Verify the API Destination
  Publish a test event to the event bus that is associated with the rule you created in a previous step, and verify that your subscriber in Salesforce receives the event from Amazon EventBridge.