@@ -63,9 +63,10 @@ The following image represent the application workflow. Each step in the flowcha
* Log into the AWS Management Console and navigate to the AWS Step Functions page.
* Click on Create state machine to start the process of creating your workflow template.
* Choose **Blank** to create a workflow from scratch.
* Choose a relevant name for your Step function (VERY IMPORTANT: do not forget that you are working on the same AWS Amazon account with the other students)
Inside the workflow studio, navigate to the left-hand panel and select **Flow** control.
#### Step 1: Map block
Choose **Map**, which allows for parallel processing:
Choose **Map**, which allows for parallel worflow for each item in a dataset (in our case each .tif file is an item):
* Assign a suitable name
* Select the processing mode as 'Distributed,' facilitating the creation of separate child workflows for each image.
* Choose the item source as 'Amazon S3,' then select 'S3 object list' as the S3 item source. Navigate to the S3 bucket **'satellite-images-ndvi'**, where the NDVI images are stored.
