Stages of development of a promotional site

On Habré, few people talk about promotional sites, although this is a big market. Developing promotional sites, you can pay attention to the fact that the process itself cannot be similar to the development of a corporate resource or an online store.

What time ago we were seriously engaged in the development of a pre-project preparation scheme for a promotional site. Of course, this is not a panacea and many examples that are not suitable for this implementation. But if you look, the scheme allows you to protect the company-developer and client.

So, in our version it is convenient to work in the following way with the client:


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And the most important processes are the development of ideas and their presentation (but more on that later).
Very interested in the opinion of the community how to simplify, improve this scheme.