Create a New Org and new App in Vahana

When should I make a new organization, and when should I make a new app within an organization using Vahana?

What are the good things about creating a new organization for a new app, and what are the advantages of making a new app in an organization that already exists?

@nimesh.singh @Vikas_Malik please help

Meanwhile you can look into the following documents for Vahana 2