Final answer:
Software testing is often legally required because contracts might specify testing obligations, regulations may demand it for compliance purposes, especially in critical industries, and to mitigate legal risks associated with software failures.
Step-by-step explanation:
Software testing is sometimes required for legal reasons primarily because contracts may stipulate specific testing requirements. Ensuring that the software functions as intended and meets the agreed-upon standards can be a legal obligation, and failure to comply might result in breaches of contract or legal disputes. In certain industries, especially those involving health, safety, or financial transactions, strict regulations govern the release of software, and rigorous testing is necessary to demonstrate compliance with those regulations.
Moreover, in cases where software failures could lead to significant harm or financial loss, robust testing is necessary to mitigate risks and protect both the developers and users legally. While international laws may not universally mandate software testing, they can influence testing practices. Specific standards and certifications, such as ISO/IEC 27001 for cybersecurity, may be required for operation in certain regions or industries, which involve substantial testing procedures.