Emulator
An emulator is software that reproduces the behavior of another hardware or software platform, allowing applications to be tested without the original physical device.
“Software used during testing that mimics the behavior of hardware.”
(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)
View the complete ISTQB GlossaryWhat is Emulator?
Emulators simulate devices, operating systems, or environments, enabling developers and testers to execute software under controlled conditions.
Platform simulation: Emulates hardware, operating systems, or devices.
Testing support: Enables early testing before physical devices are available.
Limitations: Some hardware-specific behavior may differ from real devices.
Real World Example
A regulated product team is preparing a release where Emulator appears in reviews, test design conversations, or defect triage rather than as an isolated glossary word.
The risk is that the team treats Emulator as interchangeable with nearby ISTQB terms. That makes test scope blurry and can lead to weak evidence for the release decision.
The tester anchors the discussion in the official definition, asks where the concept appears in the product, and designs examples that show the difference between Emulator and similar ideas.
The page becomes useful in practice because Emulator is connected to a specific testing decision, not memorized as a detached definition.
Practice Questions
Question 1
Which statement BEST describes Emulator in the context of ISTQB terminology?
Question 2
A tester needs to explain Emulator to a non‑technical stakeholder. Which approach is MOST appropriate?
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