Any proposal or bid will be assessed as to its ability to meet all of the policies. Principles are the engineering principles that should be adhered to. Like all principles there are implementation options but the underlying spirit of the principles must be adhered to. Preferences are areas where the Department would prefer a particular mechanism, style, methodology, product etc. The adoption of alternatives by Service Providers is possible but convincing reasons for the adoption of any alternatives will need to be provided.
Propositions collect the hypotheses and ideas raised in the various areas of the model architecture.
Service Providers are required to consider the propositions and adopt them or articulate alternatives together with convincing reasons for the alternative. Where more detail is required, there may be an architectural model, held as a separate document, giving more information regarding the architectural aspect, including the description, objectives and rationale for that particular architecture. They have had to describe how their proposed solutions satisfy the general engineering principles. These Views also provided a concise description of the technical proposals that were invaluable in allowing staff not directly involved in the procurement to quickly gain of overview of the solutions. At this stage, the service provider was required to be more explicit about their proposed solutions.