The present disclosure relates to system(s) and method(s) for enabling secure and efficient communication between user devices within an organization. Cloud-based messaging services are popular, but organizations hesitate to use them due to the risk of private data residing on public cloud servers. Organizations prefer to host the servers within the organization (on-premise). However, this approach is neither efficient nor cost-effective. The disclosure describes a system and method for secure and efficient communication within an organization that uses an on-premise server to tokenize user messages, i.e. replacing user data in messages with token to generate a tokenized message and sending the tokenized message to the cloud server. In response, the cloud server returns a processed tokenized message, which is then de-tokenized by the on-premise server before forwarding the message to the user. The proposed system is both secure and efficient.