With the abundance of cybercrime activities in the real world, the significance of the digital forensics process has rapidly increased in cybercrime investigation. Digital forensics is the process of acquiring the digital evidence from the computing device and preserving, investigating, analyzing, and presenting the evidence legally to the court against cybercrime. The main objective of digital forensics is to perform the standardized investigation process to present the digital evidence for identifying the criminal who launched the crime event.
   Digital forensics still confronts the development of the formal and consensus investigation process models that the law enforcement system employs to measure the digital evidence-s reliability. The lack of standardization and agreements in the digital forensic process models increases the complexity of the forensic investigators in proving the evidence in court.
   In digital forensics, designing comprehensive digital forensic process models is vital to encompass the entire formal investigation process. To increase the prospects of the admissibility of digital evidence in the court, digital forensic investigation process models need to contemplate the principles in the legal proceedings and law enforcement system. Recently, various process models in mobile forensics, cloud forensics, network forensics, mobile cloud forensics, database forensics, and Internet of Things (IoT) forensics have emerged.