How do you determine which types of testing to use for software verification?

Analyzing requirements, risks, and application architecture. Considering budget, deadlines, and available resources. Prioritizing based on the criticality of functionality.

Main factors:

• Type of application: Web, mobile, desktop, API.
• Criticality of functionality: How important the component is for the business.
• Risks: Probability of failures and their consequences.
• Development timeline: Affects the depth and scope of testing.
• Budget: Determines the possibility of conducting certain types of testing (e.g., load testing).
• Quality requirements: SLA, security standards.

Typical set:

• Functional testing: Verification against requirements.
  • Unit
  • Integration
  • System
  • Acceptance
• Non-functional testing:
  • Performance (load, stress, volume)
  • Security (pen tests, static/dynamic code analysis)
  • Usability
  • Compatibility (browsers, devices, OS)
  • Localization/Internationalization

For example, if it is a banking application, the priority will be on functional testing of critical operations (money transfer), security testing, and load testing. For a simple landing page, the focus shifts to functional testing, usability, and compatibility.