Quick meaning
The process of guiding a new user through an app's features for the first time.
Think of it like this
Like the welcome tour given to a new employee on their first day.
Where you may see this
You may see this inside app stores, app settings, software updates, and install instructions.
Why it matters
Knowing the term helps you understand what an app is asking you to do before you tap, install, or change anything.
Say it simply
Onboarding means: The process of guiding a new user through an app's features for the first time.