ePortfolios are a high-impact method of storing, displaying, and reflecting on your experiences and skills. This means that it is a platform for you to display your previous work and experiences while also demonstrating your development through including an insight into both the process and output of your work.
Essentially, an ePortfolio is a website where you display your relevant work and experiences to demonstrate your skills and expertise. To do this you include projects, papers, assignments, internships, etc. which demonstrate relevant skills alongside reflection. This will allow those who view your site (think future employers, graduate school admissions offices, and internship sites) to see concrete evidence of your development.
What is an ePortfolio?
Check out this presentation for an overview on ePortfolios.