All that you need to talk about here is your personal experience as well as your professional experience. Do talk about how the skills you are having is going to benefit the overall business.
Mention your own digital marketing story i.e. the things you have learned over the span of your work tenure with the previous company or team and how this very knowledge can help in the growth of the business.
Render focuses upon the unique abilities you possess. Discuss what makes you different from all other applicants. In short, do talk regarding the skills, experience, and knowledge that you have acquired so far.