SFDPO
Exploratory Testing Heuristic
Structure
What the product is?
Architecture
Code
Modules / Features
Data
What it processes?
Inputs
Outputs
Modes / States
Operations
How it will be used?
Who?
Where?
When?
Function
What the product does?
Functions
Error handling
UI
Platform
What it depends upon?
OSs
Environment
3rd party components