No digital firms please, only independent developers.
Please introduce yourself with this 4-digit pin. It helps us weed out the auto responses. (4-digit number in which the first digit is one-fifth the last, the second and third digits are the last digit multiplied by 3, and the sum of all digits is 12)
Please see the attached user story and provide a call flow and logic diagram for how you would build the desired functionality using AWS native SDK's with Cognito and Lambda services.
Please detail any customizations you would make to Cognito, and any Lambda functions you would need to create.