What is Software Testing? Why is software testing necessary?

Posted on by By K Ramakrishna, in Software Testing | 0

What is Software Testing?

Nowadays, Software testing plays an important role,which helps to improve the quality, reliability and performance of the software applications. Usually software testing is considered as one phase of the software development life cycle (SDLC).

Software testing is the process in which the defects are identified, isolated and subjected for rectification to ensure that the product/project is defect free in order to provide quality to the product/project, hence customer satisfaction.

It includes, a set of activities conducted with the intent of finding defects in software so that it could be corrected before the product is released to the end users.

Why is software testing necessary?

⇒ Software testing is really required to point out the defects  that were made during the development phases, because it can be very expensive in the future or in the later stages of the development.

⇒ It’s essential since it make sure of the Customer’s reliability and their satisfaction in the application.

⇒It is very important to ensure the Quality of the product. Quality product delivered to the customers helps in gaining their confidence.

⇒Testing is required for an effective performance of software application or product.

If the Product released to the market without conducting proper testing then,Software that does not work as expected can have a large impact on an organization. It can lead to many problems including:
⇒ Loss of money : This can include losing customers right through to financial penalties for non-compliance to legal requirements
Loss of time : It will take much time to resolve
Damage to business reputation : If an organization is unable to provide service to their customers due to software problems then the customers will lose confidence or faith in this organization

Software bugs can potentially cause monetary and human loss, history is full of such examples

⇒ The China Airlines Airbus A300 crashing due to a software bug on April 26, 1994 killing 264 innocent lives.
⇒ In April of 1999 ,a software bug caused the failure of a $1.2 billion military satellite launch, the costliest accident in history.
⇒ In May of 1996, a software bug caused the bank accounts of 823 customers of a major U.S. bank to be credited with 920 million US dollars.

⇒ Mariner Bugs Out (1962):Cost: $18.5 million

⇒ Hartford Coliseum Collapse (1978)
Cost: $70 million, plus another $20 million damage to the local economy

⇒ Medical Machine Kills (1985)
Cost: Three people dead, three people critically injured

As you can see, testing is important because software bugs could be expensive or even dangerous.


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