An effective business book marketing service involves identifying your target audience, creating compelling content, building your author platform, and utilizing strategies like email marketing and partnerships to boost visibility and sales. In addition, securing media coverage and attending events can help increase exposure and credibility for your book. Offering pre-order incentives and continuously measuring and adjusting your marketing efforts based on analytics are also crucial for success. By implementing these strategies strategically, you can effectively market your business book and reach a wider audience.