OPT is a program that allows international students with F-1 visas to work in their field of study for up to 12 months after graduation. For STEM (Science, Technology, Engineering, Mathematics) graduates, there is an option to apply for a 24-month extension, resulting in a total of up to 36 months of work authorization. OPT provides a unique opportunity for students to gain practical experience in their area of expertise, apply theoretical knowledge in real-world scenarios, and build a professional network in the United States.