What is the significance of SSH protocol ?

The traditional Internet protocols like Telnet, FTP, even email, share data/information in unencrypted form over Internet, which can easily be eavesdropped. Since the data is unencrypted, it is unsecure and hence any hacker can easily grab that data such as username and password, other data shared etc.
On the other hand, if we use SSH, it secures our data by creating a secure connection with encrypted data. This ensures that only the client and the server will have access to actual data.