What is the best strategy to market new product or service to a different say region?

First of all you have to conduct a comprehensive study preferably by an independent company in every aspect such as the market, the target cliental, the product, the compotators, the purchasing habits and power of the people in that region, and more then you start from there. 

1. Flexibility Is Key 

When that region, market, or geographic opening presents itself, you have to be ready to lead your company’s move into expansion mode.Unless your marketing plan has the elasticity necessary to respond quickly and effectively as new prospects emerge, you’ll face obstacles in converting those opportunities into drivers of long-term growth. 

2. Perfect the Process, Not the Plan 

Of course, you can’t anticipate, much less create, a roadmap for navigating every possibility that your business may encounter. 

3. Create a “Market Expansion” Toolkit 

For example, your direct marketing platforms--e-mail lists, social media networks, and mailing lists for print communications--are essential tools in promoting a new product or service launch, expansion to a new region, or entry into new vertical markets. 

4. The Relationship Factor 

To reach that point, you need to approach direct marketing platforms in terms of how they can be used to share information and build relationships, not just to sell products and services. 

5. Review Your Resources 

As you’re identifying viable opportunities for expansion, take a look at your internal resources, and think about how you’ll need to deploy them to manage your growth goals. 

6. Keep Your Message on Target 

As your company’s reputation and name recognition grow, you’ll need to make sure that your marketing message keeps pace and reflects the attributes that your loyal customers value most. 

7. From Vision to Validation 

Gaining that depth of understanding can even contribute to developing a strategy for integrating your company into the interests and activities of local communities, whether you participate independently or in collaboration with your strategic partners.