Infrastructure for affinity-based marketing plan

Assuming you mean technology infrastructure, the short answer is: online.

For classic "affinity-based" marketing, you'll need to build community. And in the 21st Century, the best way to build community is through Web sites, email marketing, really simple syndication (RSS), blogs, and so on. This is the fastest and also the most cost-efficient way to build your "network. "

As you plan and budget the development of your affinity-based model, tapping the World Wide Web and all the tools and resources that support that environment will shorten your time to market. Be sure to include both the assets you own and the assets you license.