Aside from their chosen profession, micro-business owners need to have some level of awareness or competency in each of the following:
Bookkeeping and Accounting
Information Technology
Sales and Marketing
Government Compliance and Legal
General Business Acumen
The fun and challenging thing is that micro-business owners get to balance their chosen profession and the other five things.
What sucks is that most business to business service providers offering solutions in those other five areas are actually marketing to small businesses, up to 50 people.
If you are a micro-business, look for a business service provider that caters to micro-business.
If you are a business service provider, consider an offering that is specific to teams of 10 or less.