Big softwares are always complex and difficult to develop. Software engineering has a great solution to decrease the complexity of any project. Software engineering divides big problems into several small problems. And then start solving each small problem one by one. All these small problems are solved independently to each other.
Software requires a lot of handwork and software engineers are highly paid professionals. A lots of man force is requires to develop software with millions of codes. But in software engineering, programmers plan everything and reduce all those things that are not required. In turn, cost for software productions becomes less as compared to any software that does not use software engineering approach.
Anything that is not made according to the plan always wastes time. And if you are making big software then you may need to run many code to get the ultimate running code. This is a very time consuming process and if it is not well managed then this can take a lot of time. So if you are making your software according to software engineering approach then it will reduce a lot of time.
Software should be reliable, means if you have delivered the software then it should work for at least it’s given time span or subscription. And if any bugs come in the software then company is responsible for solving all these bugs. Because in software engineering, testing and maintenance is provided so there is no worry of its reliability.
Effectiveness comes if anything has made according to the standards. Software standards are the big focus of companies to make it more effective. So Software becomes more effective in performance with the help of software engineering.