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N-tier architecture is a good fit for small and simple applications because of its simplicity and low-cost. Also, it can be a good starting point when architectural requirements are not clear yet. [1] [2] A three-tier architecture is typically composed of a presentation tier, a logic tier, and a data tier.
The documentation of the Enterprise Architecture should include a discussion of principles and goals. [Note 1] For example, the agency's overall management environment, including the balance between centralization and decentralization and the pace of change within the agency, should be clearly understood when developing the Enterprise ...
Enterprise Architecture Planning model consists of four levels: Level 1 - getting started : This layer leads to producing an EAP workplan and stresses the necessity of high-level management commitment to support and resource the subsequent six components (or steps) of the process. It consists of Planning Initiation, which covers in general ...
The major elements of a core architecture data model are described as follows: [3] Core : The essential elements of architecture information that need to be developed, validated, and maintained and that should be sharable across architecture concerns to achieve architecture goals (e.g., interoperability, investment optimization).
According to Forrester Research, solution architecture is one of the key components by which Enterprise Architecture delivers value to the organization. It entails artifacts such as a solution business context, a solution vision and requirements, solution options (e.g. through RFIs, RFPs or prototype development) and an agreed optimal solution with build and implementation plans ("road-map").
System context diagrams are used early in a project to get agreement on the scope under investigation. [4] Context diagrams are typically included in a requirements document. These diagrams must be read by all project stakeholders and thus should be written in plain language, so the stakeholders can understand items within the document.
Applications architecture strategy involves ensuring the applications and the integration align with the growth strategy of the organization. If an organization is a manufacturing organization with fast growth plans through acquisitions, the applications architecture should be nimble enough to encompass inherited legacy systems as well as other large competing systems.
I'd like to clean this article and the Three-tier (computing) article up and merge them together. Two-tier, three-tier, n-tier, are all just names for the same basic concept (that steps from Model-view-controller) and both articles do a bad job explaining things. I originally just merged the articles (bad idea) and planned to work on them later ...