Signup/Sign-in on IBM Cloud: https://ibm.biz/Bdfscz
Select Cloud Foundry from navigation menu
Click on "create" under "Public Application"
Select free plan -> Select SDK for Node.js -> give your application a unique name -> click create
Visit your application and copy your application url
From navigation menu select API Management
Select services -> API Gateway
From managed API's select API proxy
Give your API a unique name, in the exteral URL field paste your application url that you copied in step 2
Your API is ready and live, copy your API route address and open it in new window.
You have managed to securely expose a cloud Foundry application.