The process of managing the quality of services delivered to a customer according to his expectations is called Service Quality Management. It basically assesses how well a service has been given, so as to improve its quality in the future, identify problems and correct them to increase customer satisfaction. Service quality management encompasses the monitoring and maintenance of the varied services that are offered to customers by an organization.
Whether you are in the software business offering services to clients or operate in the food, hospitality or travel industry, service quality management is integral to managing customer expectations and business growth. The service quality can either relate to the service potential (qualifications of the persons offering service), service process (quickness, reliability etc.) or the service result (meeting customer expectations).
Dimensions of Service Quality
Measuring of service quality relies on the customer’s perception and this could be different from the expected service. To determine the gap between services expected and perceived service, several models are used like the SERVQUAL model, RATER model, e-SERVICE QUALITY etc. The main dimensions of service quality determination are as follows:
- Reliability – This is the ability to perform the service dependably and accurately, as promised. In software service, it would be the correct technical functioning of the application and various features such as GUI features, billing, product information etc.
- Responsiveness – How quickly the services are rendered to the customer and the promptness of service delivery. With respect to software services, it would be the ability to respond to customer problems or give solutions.
- Assurance – This is a measure of the ability to convey trust to the customers and how well they extend the courtesy. Software assurance involves the amount of confidence the customer has in handling the software application or navigating a site, the belief he has on the information provided and its clarity, reputation etc.
- Empathy – Giving personalized attention, understanding the requirements and caring for the customers. The software service would include customized applications, one-to-one customer attention, security privacy and understanding customer preferences.
- Tangibles – The physical attributes like appearance, equipment, facilities etc. When we speak of software services, the tangibles would be aesthetics of the software application or website, navigation features, accessibility, flexibility etc.
Static Testing – The processes of reviewing, inspection, walkthroughs etc. wherein verification of the software takes place without actually running the code, is called static testing. Syntax, code structure, data flow etc. are checked and static analysis like mutation testing is also used to check for efficiency of the test cases.
Dynamic Testing – When the programs are executed with the help of test cases and software is validated, the process is called dynamic testing. This kind of testing is done even before the programming is complete so that sections of code are tested individually using tools like stubs or drivers and can be done manually or through automation.
White-Box Testing – The testing approach wherein the internal system of the application is tested thoroughly and is applied at the unit, functional and system level testing processes. It’s effectively used to detect the maximum number of errors or bugs except the unimplemented sections or in case of missing requirements. The different techniques of white-box testing include:
- API Testing – application programming interface; public and private APIs are used to test the applications
- Code Coverage – test cases are developed to cover a certain criteria of coverage
- Fault Injection Methods – faults are injected into the system to measure the efficiency of the testing strategy
- Mutation Testing Methods – new software tests are developed to measure the performance of the existing tests and involves modification of the source code in small ways to assess the test cases
Black-Box Testing – This involves testing of the software functionalities without going into the intricate details of the software code or system. The user-end features are tested and several scenarios are tested for user acceptance or integration etc.
Compatibility Testing – A software application doesn’t serve the desired purpose if it’s not compatible with other applications, operating systems or target environments. Compatibility testing ensures that these issues do not exist in the software developed.
Regression Testing – Software development involves a lot of change management due to changes in customer requirements and this sometimes causes errors in software that was previously working fine. Regression testing is very helpful to find bugs after a major code change has happened or to uncover old bugs that might have crawled in. The common method to conduct regression testing is to use old test cases and check if faults that were fixed earlier have re-occurred. Due to the enormity of the testing process in regression method, it’s the most time-consuming of all testing methodologies and are often automated to reduce testing cycles.
Performance Testing – The performance of a application is tested to measure several attributes like usability, scalability, responsiveness, reliability, stability etc. The different kinds of performance testing are as follows:
- Load Testing – Here the performance of the software is tested when large numbers of users work on it at the same time or while handling huge volume of data etc.
- Volume Testing – Method to test software functions when the file sizes are increased
- Stress Testing – Used to measure software reliability when used for long periods of time or when exposed to heavy workload. It’s also called as endurance testing.