User experience, usability, functionality and performance are the key parameters that are thoroughly checked in UAT. In this article, you will get to know about the differences between functional testing and UAT.

1. CONCLUSION
If you are looking forward to implementing functional testing or UAT for your specific project, then do
get connected with a professionally acclaimed software testing services company that is in line with
your project specific requirements.
To know more about our services
please email us at
info@testingxperts.com
www.TestingXperts.com
USA | CANADA | UK | NETHERLANDS |
SOUTH AFRICA | INDIA | SINGAPORE
© 2022 TestingXperts, All Rights Reserved
© www.testingxperts.com
Functional testing is a black box type of testing and includes many important types of functional testing such as
Smoke testing, sanity testing, system testing, unit testing, regression testing etc. It is mainly concerned and focused
on ensuring that all the functions of a software application are strategically verified. User Acceptance Testing is
focused on testing the product from a user’s viewpoint, as ultimately users would be using the software product or
application post release of the product. User experience, usability, functionality and performance are the key
parameters that are thoroughly checked in UAT. In this article, you will get to know about the differences between
functional testing and UAT.
What is functional testing?
What is the Difference between
Functional Testing and UAT?
It is a testing method where the application’s basic functionalities are tested against a predetermined set of
specifications. Functional tests measure whether the desired output is returned by the given input, regardless of any
other details. Through the implementation of functional testing, there is a proper understanding as to whether the
application is fully functional or not. Each function of the software application is properly tested using this testing
method.
Proper input is provided and then the output is verified against the functional requirements. The source code of the
application is focused and worked upon. Client/Server communication, Database, security, APIs and User Interface
is checked using this testing method. This testing can be performed either manually or through automation. Error
conditions, system accessibility, basic usability and mainline functions are some of the crucial functionalities that
are tested through the functional testing method. Sample inputs are provided, resulting outputs are captured and
then the expected outputs are verified to know whether they are in line with actual outputs or not.
What is User Acceptance Testing (UAT)?
It is a testing method that verifies whether the product or application is built as per the user and business specific
requirements or not. An end-user is given the responsibility to test the product in a real-time production environment
and then provide valuable feedback and review about the software application. Based on the feedback provided, the
team will make a strategic decision to further improve the quality of the product and thus improve its overall
effectiveness in terms of functionality and performance.
This testing method focuses more on the level of user experience and usability a software product or application
can provide. The product’s worth from a real-time market viewpoint is scrutinized and worked upon in this testing
method. UAT is the final testing phase that is performed just before the product is released. The end-to-end business
flow is validated through this testing method. The testing and development team, business analysts, business
owners, project sponsors and various stakeholders are collaborated to bring the best out of this testing method. In
certain scenarios, UAT is also known as “Beta testing” or “End-user testing.”
All the functions of the software application are
tested
Unit testing, Integration testing, Interface testing,
regression testing etc., are some of the important
types of functional testing
Defined functions are checked to know whether it is
working as expected
It is a verification activity
The functionality of the software is validated against
functional requirement specifications
User acceptance criteria is one of the important
criterion that is tested
UAT doesn’t have any subtypes. It is one of the
software testing types
The user experience, usability and performance are
checked to know whether it is in line with business
requirements
It is a validation activity
The software is validated against customer
expectations
Differences between functional testing and UAT:
Functional Testing User Acceptance Testing