What is, When to use, How to use Incognito mode in browser?

What’s Incognito mode?
Alternatively referred to as private browsing, InPrivate Browsing, or a private window, Incognito mode is an Internet browser setting that prevents browsing history from being stored. Normally, when you visit any web page, any text, pictures, and cookies required by the page are stored locally on your computer. Additionally, any searches or forms that are filled out may be stored in autocomplete fields. Incognito mode forgets this data when you close the browser window, or doesn’t store it at all.

When can we use Incognito mode?
Deletes Cookies – Cookies are generally used to create a more tailored and relevant browsing session. However, by tracking your cookies, websites can follow you around the web, build a detailed profile of your online habits and then use this information to send you targeted ads. This is particularly annoying if you’re searching for a gift for a family member and despite your best efforts to keep it a surprise, ads for the gift appear everywhere on your family computer. If you have Incognito Mode enabled, browsers will delete these cookies when you log out keeping your personal preferences private.

Keeps your browsing history private – If you need to use a public computer to check an email or shop online, there’s a good chance the computer will store your browsing history. This means that the next person who logs on could potentially see every single site you’ve visited and even log into these sites using your details. Incognito Mode will prevent this from happening by erasing any temporary browsing data as soon as you log out.

Multiple sessions – One of the great advantages of going Incognito, is it enables you to sign in to multiple accounts simultaneously. For example, you could log into your work account from an Incognito window whilst remaining in your personal account from a normal window. Similarly, if you had a friend over that wanted to log into their social media account, they could do this in a separate incognito window so you wouldn’t have to log out of your own account.

How to use Incognito mode in Chrome or Firefox browser?
Google chrome:

Firefox:

Source:
https://www.computerhope.com/jargon/i/incognito.htm
https://www.metacompliance.com/blog/3-reasons-to-browse-the-internet-in-incognito-mode/