To qualify for an EB-1 visa, the petitioner must provide evidence that she or he is a person of extraordinary ability within the sciences, arts, education, business, or athletics and plan an endeavor within an area relevant to that discipline
Based on these requirements, an expert would provide a highly detailed interpretation of your endeavor based on USCIS criteria. In brief, the expert will provide an assessment of evidence including: national or internationally-recognized awards, membership in exclusive associations, materials that have been published about you, your research contributions (books, articles, or other publications), and other documents that fit with the criteria considered by the USCIS.