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Software refers to various computer programs and data that instruct the computer regarding the functions it must perform. These programs and data may also be stored in the computer. Hardware is the term used to denote the physical components of a computer and consists of the physical devices and connections that are necessary to store and run software. Software, on the other hand, is intangible. Software systems are usually divided into three categories, system software, application software and programming software. However the distinctions between the three are vague. System software helps in running the computer hardware and includes servers, device drivers and operating systems. Application software is aimed at various functions based on the user and is created for a definite purpose. Such software touches upon a wide range of topics. Common applications include video games, educational software, business software and image editing. Programming software offers tools that help programmers in developing computer programs and software. Such tools include text editors, compilers and interpreters.
Software architect is a broad term and may be used to describe various roles. However, there are some common features. Software architects are involved in the design aspects of the code and not the physical traits of the hardware. Software architects can be of different types. For example, an enterprise architect is involved in business decisions relating to the software. An application architect handles only one software application.
Software as a service or SaaS is also sometimes called software on demand. This is software that is set-up on the internet and is organized to work behind a local area network or a firewall. SaaS may be provided to a customer as a service on demand which works through a subscription. It may also be a ‘pay-as-you-go’ service. The advantages of SaaS are that it can be accessible anywhere and at anytime. SaaS is also known to be reliable and secure. The consumer also does not have to buy additional servers or software. The implantation of SaaS is quick and hence consumers can deploy the services within a matter of hours. The consumers also need to adhere to a monthly obligation instead of any upfront costs.
Software quality refers to the effectiveness of the software design. The software must also conform well to the design and this is known as quality of conformance. This is related to implementation. Those involved in business usually use the term SaaS in relation to business software.
Software development methodologies are also referred to as system development methodologies. These terms are used in software engineering to refer to a framework of structure, planning and control in the development of an information system. The framework of software development methodologies came into existence in the 1960s. Many such frameworks have come into existence over the years and each has its own advantages and disadvantages. Each framework is suited to a specific type of project on the basis of certain considerations relating to the project, organization and technical aspects. A software development methodology framework is described as a formal documentation.
