Think of this as describing the purpose of the position, and its role within your company or organization as a whole. A job summary will briefly acknowledge the fundamentals of the position, so leave space on your job description template to answer.
Outline the core responsibilities of the position. Make sure your list of responsibilities is detailed but concise. Also emphasize the duties that may be unique to your organization. For example, if you are hiring for an “Event Management” role and the position requires social media expertise to promote events, include this detail to ensure candidates understand the requirements and can determine if they’re qualified.