Assume, if you are in an IT business and you got a big project, really big that can help your business to grow more but at the last moment, your IT vendor gives up and he falls on his promise.
How will you feel?
Scenarios like these can never occur if you build a good relationship with your IT vendor. But this is not all! There are more reasons to do so.
https://www.ictcircle.com/benefits/vendors