Module 02 · 35 min
Understand how test work changes across sequential, iterative, incremental, Agile, DevOps, and maintenance contexts.
Written and reviewed by ShiftQA Labs QA Education Team · Updated September 2, 2026
Every development model influences when test analysis begins, how frequently software is available, and how feedback moves. Sequential models emphasize planned stages; iterative and incremental approaches repeat analysis, construction, and testing in smaller cycles.
Component, component integration, system, system integration, and acceptance testing focus on different objects and objectives. Functional testing asks what the product does. Non-functional testing evaluates characteristics such as performance, usability, reliability, and security. Structural testing considers internal structure.
Confirmation testing checks whether a specific defect was fixed. Regression testing checks whether the change damaged previously working behavior. Maintenance testing applies when a released system is changed, migrated, retired, or affected by its environment.
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Unofficial ISTQB preparation by ShiftQA Labs. Use the official CTFL syllabus and sample materials as the source of truth.
