how to scale up your business model and build a passive income source

let’s say you like to walk dogs and can do it after your regular day job .. but you are a single person and have limits on the hours you can walk the dogs

but if you want to scale up …

you could create a website or an app that matches demand ( people need their dogs walked ) with supply ( dog walkers ) and take a small cut from each deal .. that is a win win for all .. you will be making money in your sleep and this will be a passive income ..

once your website is setup .. the sign ups will be automatic and you will be making money without putting any active effort