once you've chosen your business and focused on your niche, the next step is to Create some content relating to your niche and post to your website or blog, and submit to article directories.

A vertical marketplace is a marketplace focused on an specific market niche.

niche business refers to a targeted business, i.e a business in a focused/particular segment of societal/ geographical aor demographic area. for eg. supplying of religious offerings in a sacred city.

It was a Christian Movement that focused on solving social problems.

It means being focused on ones social position.