Digital forensics, a vital discipline in cybersecurity and investigations, has expanded to encompass the complexities of the Internet of Things (IoT). IoT forensics, dedicated to IoT device and data investigations, presents unique challenges. Digital and IoT forensics encompass multi-tiered levels of investigation, each with its unique challenges and objectives. This paper introduces digital forensics highlights, IoT forensics’ distinctive aspects and provides a concise overview of the different levels of digital and IoT forensics. Each level requires specialized techniques and tools to address resource constraints, diverse data sources, legal compliance, and privacy concerns. As digital and IoT technologies evolve, a comprehensive understanding of these levels is essential for conducting effective investigations and upholding cybersecurity and legal standards.