What Is TMMi in Software Testing

Anna Khrupa by Anna Khrupa on 03/15/2022

What Is TMMi in Software Testing

TMMi is a worldwide standard for test process improvement. It is a well-researched model with international support that enables companies to understand the test process maturity and identify opportunities to perfect it in software development cycles.

TMMi (or software testing maturity model integration) was designed in 2005 to incorporate approved components from existing models to address relevant needs and trends. It is a test maturity model that has compliance with international testing standards. It provides guidelines for developing testing capabilities. Companies can apply TMMi to a number of software development life cycles to improve common testing challenges. 

TMMi is an independent model, applicable to any methodology or business type. It is represented by the concept of maturity levels, which are easy to understand and use globally.

Structure of Software Testing Maturity Model

TMMi has the concept of levels through which an organization goes through while evaluating whether the system satisfies specific requirements. 

TMMi is a staged model with five levels and a few process areas in each of them (except the first one). All five steps represent a logical hierarchy and evolutionary path. Every process area in the structure of TMMI is executed at each level without a possibility of being skipped. To achieve the goal, a company has to finish the levels gradually. 

  • Level 1 – Initial. Level 1 has no process areas and practices. There are no maturity goals as well. Procedures for determining test conditions are not used. Tests tend to be chaotic and performed in random processes. They serve as a part of debugging. It is the simplest phase, automatically achieved by any team.
  • Level 2 – Managed. Tests as a managed process. Testing separates from debugging and development activities. The level has a different approach and a defined strategy. For example, a defined unit testing process with clear techniques and criteria. There is a test planning, which may occur not as early as expected. The Managed level has five process areas: test policy and strategy, planning (risk analysis and estimation), control (product quality and resources), design and execution, and environment. It is defined by frequent deliveries, time-boxed review meetings, defect prioritization, and focus on functionality.
  • Level 3 – Defined. Tests are integrated into a development lifecycle. Testing is fully documented. Comprehensive and detailed reports allow a team to compare results across projects. The process is represented by early involvement of testing on the start, defined test life cycle, and constant feedback. At this stage, a team proceeds to non-functional testing. The existing process areas are test organization, training program, life cycle and integration, non-functional testing, and peer reviews (a fundamental part of the process). 
  • Level 4 – Measured. Tests are thoroughly designed and measured. The main characteristic of current level is the evaluation of software products. There is test measurement and product quality evaluation rather than looking for defects only. Measuring performance and usability help organizations to learn how to improve. At this stage, they can perfect product quality across all levels. More detailed reports are available (what was planned to achieve, what was achieved, what was predicted, etc.)
  • Level 5 – Optimisation. Tests are continually improved (the process never stops). This level is characterized by process quality control and a major focus on defect prevention. Technological improvements are identified and applied. This level focuses on test process optimization, which means continuous involvement of new technologies and tools. Testing techniques and methods are regularly enhanced. Special attention is given to process efficiency and effectiveness. Defect prevention over defect detection. At this stage, the main focus is on quality control and test process optimization.

Achieving each level step-by-step ensures the company has made the required number of changes. They will become the underlying basis for the next level. To get maximum results in a relatively short period of time, a team is recommended to focus attention and efforts on a manageable number of process areas.

Why Use TMMi?

TMMi is essential for evaluating and improving a testing process. Unlike CMM/CMMi (capability maturity model integration), it is specifically created for that. TMMi enhances quality, provides adequate support, and helps to maintain test productivity. The most visible benefits of adopting this particular model are test predictability and reliability. They contribute to efficiency.

So, the first and the main reason a company might want to adopt TMMi is enhanced software quality. The second one is the possibility to discover bugs in the production phase. Higher quality and the ability to detect errors early lead to better productivity of test engineering and risk mitigation, which is always a priority. For that reason, a company gets improved customer satisfaction.

One more motivation for the adoption of the test maturity model is reduced costs. Even though it can be the least visible benefit for a company. If the only goal is to decrease costs or it is something a company gives priority to, TMMi is not an ideal option. It is suitable for those organizations looking to enhance product quality first. Among other less visible benefits of adopting TMMi are improving business alignment, accelerating software delivery, and increasing the prestige of a team.

How to Adopt TMMi?

A company starts with identifying its maturity level and defining whether it is active. The next step is setting a task and structuring the process. A company decides on what should be accomplished to satisfy a specific process area. What is going to be executed to get there? The review and feedback are continually required. The teams that are able to adopt a more mature test process achieve higher levels of integration.

Though the software community understands that a zero-defect standard is unachievable, TMMI model helps at least to get close to that standard. It is another attempt to get there.

hire a team

Hire a team

Let us assemble a dream team of QA specialists just for you. Our model allows you to maximize the efficiency of your team.

Request Specialists

We Work With

Having one outside team deal with every aspect of quality assurance on your software project saves you time and money on creating an in-house QA department. We have dedicated testing engineers with years of experience, and here is what they can help you with.

Software is everywhere around us, and it’s essential for your testing team to be familiar with all the various types and platforms software can come with. In 21+ years, our QA team has tested every type of software there is, and here are some of their specialties.

There are dozens of different types of testing, but it takes a team of experts to know which ones are relevant to your software project and how to include them in the testing strategy the right way. These are just some of the testing types our QA engineers excel in.

The success of a software project depends, among other things, on whether it’s the right fit for the industry it’s in. And that is true not just for the development stage, but also for QA. Different industry have different software requirements, and our team knows all about them.

Icon Manual Testing

Maximum precision and attention to detail for a spotless result.

Icon Testing Automation

We’ll automate thousands of tests for all-encompassing coverage.

Icon Testing Outsourcing

Outsource your testing needs to a team of experts with relevant skills.

Icon Testing Consulting

Overhaul your QA processes to achieve even more testing efficiency.

Icon QA

Thorough Quality Assurance for a project of any scale or complexity.

Icon API Testing

Verify the correct operation of as many APIs as your project needs.

Icon IoT Testing

Stay ahead of the growing Internet of Things market with timely testing.

Icon Web Testing

Reach out to even more customers with a high-quality web application.

Icon Mobile App Testing

Help users fall in love with your mobile app with our texting expertise.


Make sure your CRM/ERP system meets the needs of the stakeholders.

Icon Desktop Application Testing

We’ll check the stability, compatibility, and more of your desktop solution.

Icon Functional Testing

Is your app doing everything it’s supposed to? We’ll help you find out!

Icon Compatibility

Check how your solution works on different devices, platforms, and more.

Icon Usability

Find out if your software solution provides an engaging user experience.

Icon UI

Make sure your application’s UI logic works for all categories of users.

Icon Regression

We’ll verify the integrity of your application after recent code changes.

Icon Online Streaming & Entertainment

Stay on top of the media industry with a technically flawless solution.

Icon eCommerce & Retail

Does your store meet customer needs? We’ll help you know for sure!

Icon HR & Recruiting

Streamline HR processes with a solution that works like a clock

Icon Healthcare

Test the functionality, stability, scalability of your app and more.

Icon Fintech & Banking

Give your users what they want: a powerful, secure fintech product.

We use cookies to ensure your best experience. By continuing to browse this site, you accept the use of cookies and "third-party" cookies. For more information or to refuse consent to some cookies, please see our Privacy Policy and Cookie Policy