Diploma in Engineering or Technical engineering diploma is a program focused on technical practical and skills-oriented training. These Technical engineering diploma courses are commonly known as poly diploma or polytechnic courses.

It is a technical course that only covers the essentials when ranked with an undergraduate engineering degree. It aims to provide students with technical industry or job related engineering knowledge, scientific skills, computing and analysis, mathematical techniques, a sound knowledge of English to communicate in the field and ability to apply problem solving techniques.

Its duration is minimum 3 or 2 years(lateral entry). In India recognize it as equivalent to pre-engineering or lateral entry course when considered for continuing studies in engineering related bachelors programs. After successful completion of Technical engineering diploma  course, students can either continue further engineering studies in undergraduate level or get employment as junior engineers, sub engineers, associate engineers, technicians, technologists, supervisors, superintendents, foremen, machinist, workshop technicians, draftsman, station technicians (energy, thermal, aeronautical), automobile technicians, maintenance and service technicians, equipment mechanics and technicians, CAD/CAM programmer, agricultural overseers, instrument technicians, junior instructors, manufacturing, tool and die designers, electricians…etc.

In India any one can apply for this Technical engineering diploma after completion of 10th  (Secondary School Leaving Certificate) and its duration is 3 year and lateral entry option for plus two science passed students or ITI two year passed students.For more details:https://www.skooltek.in/technical-courses/