Two-Step Verification is a process by which the user has to require two steps (method) to verify itself from preventing any unauthorized access to the account as it adds up a layer of extra protection to the account. By enabling this we can access our account only after the successful. The two-step verification in Gmail adds an extra layer of security to our Gmail account this will allow Gmail users to protect their account from any external phishing. You can see the step by step guide to enable Two-Step Verification in Gmail.