Communication and understanding between the web designer and the client

I believe communication is one of the main factors which contributes a great design, leading to a successful long-term and maintaining cooperation. Given the important reason, I am doing a kind of research regarding communication between a designer and their clients, the process of it and all the factors which are improving the efficacy and quality of your partnerships.

Since this place meets a lot of professional designers with a wide experience, I am openly asking if some of you could share some of your experience by contacting me via DM, which would significantly help me understand the process and possibly improve it.