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.
Writing job descriptions is deceptively difficult. It’s a vital part of scaling your business while maintaining consistency because it ensures you’ll end up with employees who are a better fit for your organization. My recommendation would be to structure the process. You can use our job description sample to assign the task to the HR department, or you can use the template to help you write your own.