Microorganisms have long been a focal point of human existence. They not only pose risks due to their pathogenicity, food spoliation, and antibiotic resistance, but they also support vital processes in medicine, biotechnology, food production, and environmental sustainability. Therefore, accurate identification of microbes remains essential in the disciplines of ecology, industry, and medicine. Antimicrobial susceptibility testing and morphological examinations are still made possible by traditional culture-based phenotypic techniques, which have long been the main emphasis of microbiology. Long turnaround times decreased sensitivity with fastidious organisms, and a tendency to misidentify closely related species are some of its drawbacks, which have driven technology toward more sophisticated approaches. Infections can now be identified more quickly and accurately, thanks to molecular and proteomic methods including next-generation sequencing, PCR, and high-resolution microscopy. These techniques show microbial variability in various settings, from hospital diagnosis to environmental microbiology, and food safety monitoring. Automation, robotics, further reorganization of operations, and laboratory information systems have improved information management, elevated reproducibility, and decreased contamination issues. These newer methods, however, are not free of problems. The current demand for both newer and older approaches is described in this chapter.