Preserving digital evidence in cloud environments presents a complex and multidimensional challenge for modern judicial systems. This article offers a structured analysis of key digital preservation models and international standards relevant to distributed and institutional contexts. Drawing upon a structured narrative review of the literature, it explores the applicability and limitations of frameworks such as OAIS, LOCKSS, PREMIS, PLANETS, and NESTOR, with a specific focus on Latin American judicial environments. The study identifies critical regulatory gaps, institutional constraints, and methodological issues that affect the integrity, traceability, and admissibility of digital evidence. In response, it proposes a thematic typology of relevant standards and outlines technical considerations to support forensic-ready practices. The findings aim to inform institutional policy, enhance digital preservation strategies, and contribute to the development of interoperable and sustainable evidence management ecosystems.