No matter which device you are using it always receives numerous notifications from various types of apps. It helps you to get notified every time when you are using the device. Notification pop up enables you to get a popup on the screen instantly.
Let's start knowing about the both of the types!
Notification Shade :
Notifications are a huge part for all mobile devices. You need to touch and drag the Status Bar to the bottom of the screen to display the notification shade. The Notifications panel displays a list of your current notifications, quick settings, toggle icons, upcoming events and more. Notification panel feature comes to all Stock Android ROM and AOSP based ROMs.
Shows all notifications under one hood.
Can be accessed later.
You need to drag the notification bar to read the notifications.
Some times with various notifications from numerous apps it gets flooded.
Pop-up Notification is a system to give you information for a particular process or app.Pop-Up notification refers to a graphical control element that communicates certain events to the user without forcing them to react to this notification immediately. Pop Up notification might be useful for some kind apps and also varies from user to user.
Instantly view the notifications.
Notifications can be read immediately.
When you are busy with another app, it pops up suddenly and it covers the working app.
No option to read it for a later time.
[Off-Topic] [Poll] Notification Shade vs Pop Up Notification: Which one do you prefer and Why?