Account Manager for what?

Here's the full description of a vacancy for an Account Manager:

Global brand based in the city of York requires an Account Manager to be the key point of contact for their client. You will be working closely with key senior client decision makers on a day-to-day basis and you will have a team of x3 direct reports to direct and manage. Your role will involve ensuring all campaigns are delivered within SLA agreements, on brand, on strategy, on budget and on time - giving regular updates and & service feedbacks to client contacts. Developing relationships and identifying opportunities for growth is an essential part of this role, as is having a comprehensive understanding of the commercial model and P&Ls. A thorough knowledge of all aspects of the marketing mix (print & web) is required and having an awareness of emerging techologies and industry trends is key.

I have no idea what this job is about. What would you actually do? Perhaps, in marketing, it doesn't matter... which is good, I suppose. Well done.