Quality Assurance - Verification and Validation

Functional Testing Manual & Automation Functional Testing (manual, semi-automated and automated) for all types of software ensures that your software and its components function correctly and conform to your requirements, business processes and the overall software business logic.

This can involve testing of valid and invalid user actions, environment-specific behavior, APIs, product/user interface, database management, links, security, installation, networking, prototype, and much more.

Functional testing is especially effective when run iteratively and simultaneously with development of the application. Bugs found after release into production can be 100x more costly than errors found early in the software development process.

As an independent quality assurance company that focuses on QA services alone, we ensure the quality and integrity of application features and functionality and provide an unbiased assessment of your application's functionality.

Another way to reduce testing expenses is to use a combination of manual and automated tests.

Test automation includes development of automated scripts based on predefined functional test cases and is dependent on the project schedule and requirements. As a rule, we recommend automating regression tests of stable large-scale functionality. This approach ensures stability of automated tests and low costs for their support.

How can the customer benefit from test automation?

  • Reduce the time-to-market/product stabilization time
  • Get significant cost benefits in comparison to manual testing
  • Shorten the software development cycle with testing automation
  • Increase product quality
  • Eliminate the influence of the human factor

Performance and Stress Testing

Performance Testing is usually carried out to diagnose the performance and stability of the software under normal and extreme operating conditions. As a result, one can identify the parts/modules of the software that need tuning to improve the performance.

Such testing may be also used to determine the maximum number of concurrent users, data, traffic, load, and other characteristics of the application under test; to calculate statistics for various processes; to benchmark the performance and scalability of the system; and to predict and take necessary steps in case of business growth (e. g. data input and users increase).

In general, Our team provides different types of performance testing services - stress testing, performance testing, load testing, soak testing, scalability testing, stability (reliability) testing and volume testing - to evaluate a solution's productivity and ensure that it meets all requirements.

Thanks to our experience in using and working with testing toolssuch as Silk Performer, TestComplete, LoadRunnerand JMeter, we can work both with a formulated testing task and participate in the process of problem statement. In the latter case, we use actual data of system use, assessments for its future load, deployment environment, etc.

Security Testing checks the reliability of your software's user and system security, protecting end users from the theft or loss of private and sensitive data, as well as guarding against other intrusions, including:

  • Unauthorized access, accidental or deliberate, to programs and system data by users with unauthorized or limited access
  • Theft of critical data, including user logins, passwords and payment information
  • Various types of fraud during online payments
  • Crack of web systems for future distribution of malicious software to system users, etc.

Depending on the degree of coverage (primary security test or full application and server test), our security testing service may embrace security policy design, application security, operating system security, network security, disaster recovery, or all of the above.

In particular, security testing includes:
  • Dynamic testing of web applications against major types of attacks: XSS, SQL Injection, buffer overflows, manipulations of the address bar and source code revealing
  • Intrusion (penetration) tests (access control, authentication, input validation, cryptography reliability, error handling)
  • Testing of payment mechanisms in different web systems
  • Vulnerability testing of system's third-party components
  • Security code audit (use of static code analysis tools, manual review of major components of the system, recommendations on improvements, patches, security alerts)
  • Server configuration testing (search for errors in multithreaded environments that allow data to be shared or corrupted)

Mobile Testing
Stairway Tech’s inclusive mobile testing services provide you the confidence that your applications will work as intended on all devices having different screen size, hardware, OS, drivers and of course, the resolutions.

The mobile testing services include
  • Functional And non-functional testing of native mobile app or a mobile web app
  • Automated testing for quick result
  • Security testing
  • Compatibility Testing