A legitimate online business is a web based business with a genuine objective to solve problems of its clients and provide its clients with services and products that they actually need or a service which is actually a solution to there current problems,Starting a legitimate online business isn't a difficult thing to do if you have a proper business plan, enough money and other resources, but staying in business is difficult and needs business tacts. Basic requirements for any business are same. Legitimate online businesses too require investment, well laid business plan, man power and ability to take risks.