A successful link building campaign begins long before the first backlink is published. One of the most important decisions is choosing where that backlink should appear.
There are thousands of potential link building sites, but that does not mean every website is suitable for every business. A strong domain for a technology company could be almost irrelevant to a restaurant, property developer, solicitor, or online fashion store.
This is why selecting websites should never be reduced to finding the highest available authority metric. The better approach is to decide what you want the backlink to accomplish and then choose publishers that support that objective.