This topic seems actually quite controversial. Google answered the question by what could be taken as a denial. But their answer was kind of open to interpretations. And on the other hand, there are studies (one of them from Moz) that showed linking out has an impact. So, how can you be so assertive? Is it something that comes out from your own experiments?
Whatever industry you’re in, chances are there are at least one or two major conventions and conferences that are relevant to your business. Attending these events is a good idea – speaking at them is even better. Even a halfway decent speaking engagement is an excellent way to establish yourself as a thought leader in your industry and gain significant exposure for your site.

There is an excellent tool, a plugin, that helps you do this seamlessly. It’s called Yoast SEO and it’s available in a free or paid version. When you start writing your posts, the “Yoast Internal Linking” sidebar opens up and suggests which posts you should be linking to. The primary suggestions are always to cornerstone content, while the other link suggestions are for similar posts or keywords.
The first step that I take is to do a quick Google search to find pages on my domain where I've mentioned the keyword in question so that I can add an internal link. To do this, I'll use the following search query, replacing DOMAIN with your domain name (e.g. and KEYWORD with the keyword you're targeting (e.g. "social media strategy"):