This chapter explores assetization in the context of sustainable asset management. It aims to highlight different perspectives on the development of assetization in both nature and society, while addressing related opportunities and challenges. It begins with the definition and history of assetization, before diving into theories and practices of the assetization of ecosystem services and natural capital. It then looks at cases of assetization in society, including infrastructure and housing, personal data and art. After discussing the democratization of investment access, the chapter concludes with final thoughts.