Some agencies still concentrate on building links, but I’m uncertain I’d call that the strategy. The great link-focused agencies ordinarily have a bag of tactics/tricks they love. These tactics are proprietary, which suggests it’s difficult to find them explained on Quora.
That being said, there are many great tactics shared on regularly, and you’ll find a lot of interesting stuff looking around on that site at the same time (lots of that is free).
However, so far as a method, outsource link building plays second fiddle. Links aren’t the be-all-end-most of online marketing – you will need them to have success, however you also need a good social websites presence, good content, website that converts, etc.
I think, backlink building suits an increased online content and PR strategy.
At my agency, we give attention to a niche (auto parts), which allows us to both cultivate content expertise (my content creators are car nerds) and cultivate relationships with industry media (I’ve got a good list of automotive journalists and bloggers I could get in touch with and expect a response). Our strategy:
Create content we hope auto enthusiasts will relish (and we of car nerds causes us to be somewhat successful in that)
Contact the top journalists/bloggers from the automotive niche (whom we realize, or at a minimum know via email) and “pitch” them our content
If/when the content resonates together with the blogger/journalist, we have a mention of the client’s brand, and usually the link
The hyperlinks are editorial and range from finest quality sites, so that we have nothing to fear from your efforts. It’s 100% “white hat,” that you simply can’t always say about building links. The manufacturer name mentions put our clients facing thousands (or tens of thousands) of automotive enthusiasts. I don’t fully realize 40dexppky the ROI on these mentions is, but it can’t be bad.
…Along with, we’ve got an excellent piece of content about the client’s site that can generate search and social media traffic/interest for a long time.
Our “trick” is an industry and niche focus. It’s hard to create content that truly “pops” whenever you don’t have knowledge of-house, in addition to that it’s difficult to determine who the best bloggers and journalists are in a niche market without doing some are employed in that niche for a long time.