As an India national, you are eligible to apply for several types of Iran visas, based on the duration and purpose of your visit. Let's go over the different options.
Business Iran eVisa (Single Entry)
This Visa is recommended for visitors planning for a short stay in Iran for Meetings and Conferences etc.
Visa Validity: Depends on Immigration / Embassy from the date of issue
Stay Validity: Depends on Immigration / Embassy from the date of entry