Positioning strategy for a new digital brand?

First of all, this is a real-life business situation, not theory, that I am happy to see your ideas :)

Assume that you are going to launch a new online service for a local market that has looks briefly like other top global ones (such as social network has facebook, search engine has Google, video hosting has Youtube, B2B has Alibaba...), what should be our business strategy, offering strategy (e.g. values proposition,...) and brand positioning strategy to win the local market?

Be free and creative, every ideas has values. Let's together develop Vietnam's internet market.