What is the difference between Architecture and Design?

Architecture	Design
Essentials dictated by the mission (problem, need or opportunity) and its environment	Decisions compatible with the architecture
A different architecture implies a different mission	Different designs may address the same mission
Defines a class of acceptable solutions	Defines a single specific solution
About suitability or fitness for purpose, as defined by the mission	About engineering optimization, within architectural constraints
Role of the architect is mostly to make correct inferences about the mission, solution and environment	Role of the designer is mostly to make correct decisions about the solution
Architecture is done by architects	Design is done by developers
Primary audience is mission and solution stakeholders, which usually includes designers and implementers	Primary audience is solution implementers
About the mission and solution in their environmental context, i.e., outward looking	About components and subsystems of the solution, i.e., inward looking

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