Keterbatasan media digital resmi masih menjadi permasalahan bagi sejumlah perusahaan jasa dengan karakteristik Business-to-Business (B2B) dalam menyajikan informasi profil dan layanan secara terpusat dan terstruktur. PT XYZ sebagai perusahaan jasa B2B belum memiliki website korporat yang dikembangkan secara sistematis dan terdokumentasi sebagai sumber informasi resmi perusahaan. Informasi perusahaan sebelumnya disampaikan melalui media konvensional, seperti dokumen profil dan komunikasi langsung, sehingga akses informasi bagi mitra bisnis menjadi kurang optimal. Penelitian ini bertujuan untuk merancang prototype website korporat PT XYZ yang sesuai dengan kebutuhan perusahaan menggunakan Metode Prototype. Penelitian dilakukan dengan pendekatan kualitatif melalui tahapan listen to customer, build/revise mock-up, dan customer test-drives mock-up. Data dikumpulkan melalui wawancara dan observasi untuk mengidentifikasi kebutuhan informasi, struktur konten, serta karakteristik tampilan website. Hasil penelitian berupa prototype website korporat yang mencakup halaman beranda, tentang kami, profil perusahaan, layanan, detail layanan, pengadaan, galeri, aktivitas perusahaan, dan kontak. Evaluasi prototype dilakukan secara kualitatif menggunakan daftar periksa untuk menilai kesesuaian rancangan dengan kebutuhan perusahaan. Berdasarkan hasil evaluasi tersebut, prototype dinilai telah memenuhi kebutuhan informasi dan representasi identitas perusahaan, sehingga layak dijadikan acuan awal pengembangan website korporat PT XYZ. Prototype yang dihasilkan telah direalisasikan dan di-deploy sebagai media informasi perusahaan, meskipun penelitian ini difokuskan pada aspek perancangan prototype dan tidak membahas aspek teknis implementasi secara mendalam. Limited availability of official digital media remains a challenge for Business-to-Business (B2B) service companies in presenting company profile and service information in a centralized and structured manner. PT XYZ, a B2B service company, previously did not have a systematically developed and well-documented corporate website as an official source of information. Company information was primarily conveyed through conventional media, such as profile documents and direct communication, resulting in limited accessibility for business partners. This study aims to design a corporate website prototype for PT XYZ using the Prototype Method. A qualitative approach was employed through the stages of listen to customer, build/revise mock-up, and customer test-drives mock-up. Data were collected through interviews and observations to identify information requirements, content structure, and interface characteristics. The results of this study are presented in the form of a corporate website prototype consisting of a homepage, about us, company profile, services, service details, procurement, gallery, company activities, and contact pages. Prototype evaluation was conducted qualitatively using a checklist to assess the conformity of the design with the company’s requirements. The evaluation results indicate that the proposed prototype adequately meets the identified needs and can serve as an initial reference for corporate website development. As a follow-up, the designed prototype has been realized and deployed as the company’s information media, however, this study focuses on the prototype design process and does not discuss technical implementation aspects in detail.