Online sustainable business
If you gain in the buy-sell process, after subtracting all the expenditures and taxes would generate interest and motive to do more. Your outreach strategy and best tactics to reach the right audience in the right way gain transaction. For any marketing or sales activity, Content/copyright is essential and help in generating traffic. Keep updating subscribers with new the new activity on the website.
And, if you can keep this process for a year, then your business is sustainable. Your online business includes acquiring products, hosting, marketing, promotion and delivery after sales.