IRCTC, or Indian Railway Catering and Tourism Corporation, is a part of Indian Railways that looks after catering, tourism, and online ticket booking services. To help passengers book tickets easily, IRCTC authorizes Rail Travel Service Agents (RTSAs) to book tickets securely on their behalf.

The GST Portal lets companies permit certain employees to act as approved signatories. This means they can sign, file GST returns, and make payments online for the business.

In today’s digital world, the signatures of individuals and organizations are carried out electronically using a Digital Signature Certificate (DSC). A DSC is issued by the Controller of Certifying Authorities (CCA) of India and serves as a secure and legally valid form of authentication.

A Digital Signature Certificate (DSC) is a digital credential used for online transactions, signed with a private key belonging to the certificate holder. It electronically verifies the identity of the person using the certificate.

E-procurement means buying and selling goods or services online between businesses. It is different from normal online shopping because only registered users (like government departments or approved vendors) can take part.