What is User Acceptance Testing (UAT)

What is UAT?

User Acceptance Testing (UAT) is a method of testing in which the end user or client verifies and accepts the software system before it is moved to the production environment. After functional, integration, and device testing, UAT is performed in the final phase of testing.

Purpose of UAT

The primary goal of UAT is to verify the end-to-end business process. It is not concerned with cosmetic flaws, misspellings, or device checking. This form of black box research will be interesting to two or more end-users.

Who Performs UAT?

  • Client
  • End users

Need of User Acceptance Testing

User Acceptance is Needed Since developers may have developed applications based on specifications documents based on their own understanding and further needed adjustments during development may not have been adequately communicated to them, user acceptance testing is performed to determine if the final product is approved by the client/end-user.

  • Developers write software based on a requirements document that represents their “own” interpretation of the requirements, which may or may not be what the client requires from the software.
  • Changes in requirements could not be conveyed to developers efficiently during the project.

Acceptance Testing and V-Model

User acceptance testing is the requirement step of the Software Development life cycle in VModel (SDLC).

Prerequisites of User Acceptance Testing:

Following are the entry criteria for User Acceptance Testing:

  • Requirements for business must be available.
  • The application code should be finished.
  • Unit, Integration, and System Testing should all be completed.
  • In the System Integration Test Phase, no show-stoppers, high, or medium defects are appropriate
  • Only cosmetic errors are acceptable before UAT Regression Testing is completed with no major defects.
  • It is necessary to prepare the UAT environment.
  • The system is ready for UAT implementation, as shown by a sign-off email or contact from the System Testing Team.

How to do UAT Testing

The expected users of the device or program perform UAT. Beta Testing is a type of software testing that usually takes place at the client’s location. Once the entry requirements for UAT have been met, the testers must complete the following tasks:

  • Business Requirements Analysis
  • Creating a proposal for UAT testing
  • Recognize Test Scenarios
  • Create User Acceptance Testing (UAT) Cases
  • Test Data Preparation (Production like Data)
  • Carry out the tests
  • Keep a record of the outcomes.
  • Confirm the company’s goals.

Step 1. Analysis of Business Requirements

Identifying and developing test scenarios is one of the most critical tasks in the UAT. The following documents were used to create these test scenarios:

  • Business Use Cases for the Project Charter
  • Diagrams of Process Flow
  • System Requirements Specification (SRS)
  • Business Requirements Document (BRD)

Step 2. Creation of UAT Plan:

The UAT test plan lays out the strategy for verifying and ensuring that an application meets its business requirements. It outlines UAT entry and exit requirements, research scenarios and test situations, and testing timelines.

Step 3. Identify Test Scenarios and Test Cases:

Build test cases with specific test steps based on the test scenarios defined in relation to the high-level business process. The majority of UAT situations should be covered by test cases. The test cases are created using business use cases as feedback.

Step 4. Preparation of Test Data:

For UAT, it’s best to use real-time data. For privacy and security purposes, data should be scrambled. The database flow should be familiar to the tester.

Step 5. Run and record the results:

Execute test cases and, if necessary, report bugs. Bugs should be retested after they’ve been repaired. For execution, test management techniques may be used.

Step 6. Confirm Business Objectives met:

After UAT testing, Business Analysts or UAT Testers must submit a sign-off email. The commodity is ready for development after sign-off. Test Plan, UAT Scenarios and Test Cases, Test Results, and Defect Log are all deliverables for UAT testing.

Exit criteria for UAT:

Before going into production, keep the following in mind:

  • There are no critical flaws.
  • The open business method is working well.
  • Both stakeholders are invited to a meeting to sign off on the project.

Qualities of UAT Testers:

The UAT Tester should be well-versed in the company’s operations. He should be self-sufficient and think as though he were a new consumer to the scheme. To make the UAT competitive, the tester should be an analytical and lateral thinker who can integrate all types of data.

Testers, Market Analysts, and Subject Matter Experts who are familiar with the company’s specifications or processes may create tests and data that are relevant to the company.

Best Practices:

Following points needs to be considered to make UAT Success:

  • Early in the project life cycle, create a UAT plan.
  • Before the UAT begins, make a checklist.
  • Organize a Pre-UAT session during the System Testing process.
  • Set the bar high and clearly identify the scope of the UAT.
  • Avoid machine checks by testing the entire business flow.
  • Real-world conditions and data are used to test the device or program.
  • Consider yourself as a new user to the scheme.
  • Usability testing should be done Before going to development
  • There will be a feedback session and a conference.

UAT Tools

There are several tools in the market used for User acceptance testing and some are listed for reference:

Fitness tool: It is a java tool that is used as a testing engine. It’s simple to build tests and keep track of the results in a table. The tool’s users enter formatted data, and tests are generated automatically. After that, the tests are run and the results are returned to the customer.

Watir: It’s a user acceptance testing toolkit that automates browser-based evaluations. Ruby is the programming language that allows ruby and Internet Explorer to communicate with each other.

Some Example Guidelines of UAT

  • UAT is usually performed in the QA environment in standard software development scenarios. Where there is no staging or UAT environment.
  • UAT is divided into Beta and Alpha testing; however, when software is designed for a service-based industry, this distinction is less relevant.
  • If the consumer is more interested in the testing process, it makes more sense.


  • User Acceptance Testing is the full form of UAT in software engineering.
  • User Acceptance Testing (UAT) is a term used in software engineering.
  • UAT is one of the many types of research that have arisen in the last two decades.
  • Rather than guessing, the client will know “What to expect” from the product with UAT.
  • The advantage of UAT is that when the product is introduced to the market, there will be no surprises.

For more info: https://www.mammoth-ai.com/automation-testing-services/

Also Read: https://www.guru99.com/software-testing.html

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