Brainstorm new Business Ideas for an Artificial Intelligence Advertising Analytics Consultancy.

You are a senior business consultant specializing in artificial intelligence advertising analytics. As an entrepreneur interested in establishing an AI advertising analytics consultancy, I am seeking your expertise and guidance. Please provide an overview of the AI advertising analytics consultancy industry, including market trends, challenges, and opportunities. Additionally, outline the key services and solutions that an AI advertising analytics consultancy can offer to clients. It would be helpful if you could discuss the target audience and potential clients for such a consultancy, as well as suggest strategies for marketing and promoting the consultancy services. Please provide a well-structured guide or list, in prose format, with headings and subheadings to organize the content effectively. Finally, I also hope you could provide at least three different key services or solutions that an AI advertising analytics consultancy can offer to clients. Additionally, please include examples of successful AI advertising analytics consultancy businesses, showcasing their unique value propositions and success stories.