It should also be noted that a problem domain emphasizes an individual’s area of expertise. Because of this, individuals tapped for one or more solutions will often try to understand the rules and essential functions from their own perspectives—disregarding everything else. This process could be termed as the “scope of analysis” through which user stories and requirements are collected and analyzed to discover other relevant information.
As it relates to software, the customer seeking a solution essentially means that he/she is the owner of a particular problem. It doesn’t mean, however, they recognize or fully understand the scope or existence of a problem. This is generally the responsibility of an expert who is trained to identify a unique set of circumstances and follow up with a potential solution. Given this, it can be concluded that a problem domain is recognized by an engineer with a particular interest or area of expertise—not necessarily by the customer or client who has identified a potential issue.
The architecture and interconnectivity of software and hardware constitutes what is known as a solution domain. These are the tools by which a client, customer or stakeholder achieves a solution for a particular set of requirements. Each of these tools have limitations when achieving useful properties, like performance (runtime), modularity and critical updates. And each solution domain, itself, depends on a variety of components, including networking, filesystems and operating systems. It is important that an engineer understands that he/she is being compensated for researching and implementing solutions rather than what the client may fail to communicate.
A lot of work is involved in identifying the problem domain and solution domain. Developers must keep in mind what the main objectives are, as well as the user’s own thoughts about the problem. This, in part, can be derived from user stories and requirements, as well as the fact that a user is willing to pay for a solution in the first place. This is perhaps the first clear indicator that some sort of problem exists.
It is also important to not confuse the domains with each other, as is the case with the majority of Information Technology (IT) projects. The environment in which the solution is developed is the solution domain, while the environment in which it will be implemented is the problem domain. Interchanging between the two may render useful solutions in some cases, but not always. Separating the two is critical for when developers arrive at a solution after analyzing all possible circumstances, and for avoiding errors once the solution is planted.
The success of the solution depends on a number of factors, including the environment in which it is constructed and tested. If the requirements classified, or, are arranged or distributed using class diagrams in the Unified Modeling Language (UML), then one can understand and properly convert them, and find a relevant solution to the problem.