Books have indeed become an effective and influential tool in marketing. Here are just a few benefits:

1. It gives your customers valuable information in exchange for their contacts, which are of value to you. It's a win-win situation.
2. It's a reliable source of information that enables knowledge to be transferred from the company to its clients and drives leads to your website.
3. It's easy to send, share, and download.

As an ebook plays a significant role in the marketing process, the most important elements it should have are its quality and accessibility. It can take a great deal of effort to create an ebook: to find content that is educational, interesting, and effective, to design it to look engaging, and to attract the attention of current and potential clients.