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The master service agreement serves as a master contract governing the terms over potentially multiple SOWs. Sometimes it refers to scope of work. For instance, if a project is done on contract, the scope statement included as part of it can be used as the SOW since it also outlines the work of the project in clear and concise terms. [3]
Services are independent and control the functionality they encapsulate, from a Design-time and a run-time perspective. Service statelessness Services are stateless, that is either return the requested value or give an exception hence minimizing resource use. Service granularity A principle to ensure services have an adequate size and scope.
If requirements are not completely defined and described and if there is no effective change control in a project, scope or requirement creep may ensue. [ 4 ] [ 5 ] : 434 [ 3 ] : 13 Scope management is the process of defining, [ 3 ] : 481–483 and managing the scope of a project to ensure that it stays on track, within budget, and meets the ...
Managed services is the practice of outsourcing the responsibility for maintaining, and anticipating need for, a range of processes and functions, ostensibly for the purpose of improved operations and reduced budgetary expenditures through the reduction of directly-employed staff.
Once the terms have been approved, the members of the project team have a clear definition of the scope of the project. They will then be ready to progress with implementing the remaining project deliverables. This phrase "terms of reference" often refers to the task(s) assigned to a consultant or adviser.
A scope statement should be written before the statement of work and it should capture, in very broad terms, the product of the project (e.g., "developing a software-based system to capture and track orders for software"). A scope statement should also include the list of users using the product, as well as the features in the resulting product.
Service design is the activity of planning and arranging people, infrastructure, communication and material components of a service in order to improve its quality, and the interaction between the service provider and its users. Service design may function as a way to inform changes to an existing service or create a new service entirely.
Due to the fallacies of distributed computing, finding an adequate granularity is hard. [2] There is no single simple answer but a number of criteria exist (see below). A primary goal of service modeling and granularity design is to achieve loose coupling and modularity, which are two of the essential SOA principles, [3] and to address other architecturally significant requirements.