The process is very similar to a broken link building service, as the final outcome of a link mention looks identical.
The key difference with niche edit backlinks is that we are searching for relevant blog posts, which means that the link mention we can incorporate usually fits quite naturally with very little content to add.
Broken link building on the other hand is the process of finding web pages that are no longer live, re-creating the resource that was similar and ideally better than that original, and then reaching out to websites that used to link to the old resource to link to your new version.
The problem with a broken link building service is that the relevancy of the link to the content can suffer because the opportunities are fewer. It can also be very time-consuming and resource-heavy.