A digital portfolio is a curated collection of work that exhibits skills, knowledge, and creativity, serving as a tool for job hunting, professional branding, and client acquisition. Key elements include a bio, resume, projects, testimonials, and a focus on visual appeal and user experience, while maintenance involves regular updates, compelling descriptions, and adapting to audiences. Best practices highlight the importance of quality, mobile-friendliness, and obtaining permissions for collaborative work, along with collaborative review of its visual appeal and narrative.