As you already know — the business is created when you create a product or do a service and sell it for money to your customers. And basically this is all that there is — business is just exchanging your products and services for money or other products and services. Business is an exchange.
The best and the most profitable thing to do is to create your own product — to produce your own product and then to sell it for money.
It’s just as simple as that — yo have to fabricate a product and then to go and sell it to all the people who can buy it. This is how the real business is done.
You can also sell a service.
An entrepreneur can sell a service or a product.