IBL is short for In-Bound Link. It’s basically a link from another site to a page on your own site. Acquiring a lot of IBLs is crucial for SEO because it causes PageRank to increase. A IBL is the same as a Back Link.

Inbound links help to gain and maintain traffic and good position in major search engines but we should take care of the quality of inbound links which should matched our profile.....

So what are the differences between in-bound and out-bound links? Which ones will be better for SEO?

Inbound links are the links posted for our website on different other websites also termed as backlinks whereas outbound links are the links of other different websites posted on our website...both are important to achieve traffic and good position in search engines...

A link from a site outside of your site.Inbound links send visitors to your web site. Generally, this is seen as a good thing. Many sites go to great lengths to achieve as much of this "free" advertising as possible, although a few sites are very particular about where the links are pointing

In bound links are always very great to have for gnerating traffic as well as the ranking position in SERPs. If they come from relvant and good sites then they have really a bing value towards the site.