The first 6 modules of Diploma and Professional Diploma are same. You can join Diploma or Professional Diploma as per your choice. However, we recommend that joining Professional Diploma initially will be more beneficial as there is a discount of Rs. 3198 + GST (Diploma - 9145+GST, After completing Diploma, Professional Diploma Course - Rs. 9145+GST, Total 18290 +GST while Professional Diploma Course is Rs. 15092+GST, thus a saving of Rs. 18290 - Rs. 15092=Rs. 3198+GST). Moreover, you get a specialisation course with Professional Diploma course. Also, one Certificate of 1 year is more valuable than two Certificates of 6 months each.