Here is the story.
You are the new Head of Sales in a company. You open the CRM, and everything seems outdated. Contact had been there for five years. But it’s a goldmine! There are past users in these contacts, and instead of contacting cold people, you can get warm people who already know you and are easier to convert as customers.
But they now move to other companies !! So how can you identify them?
Or check this non-interactive one: