Add design and implementation docs (#1536)

content/roadmaps/102-devops/content/111-design-and-implementation.md

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-# Design and implementation
+# Design and implementation
+
+Good design encompasses factors such as consistency and coherence in component design and deployment, maintainability to simplify administration and development, and reusability to allow components and subsystems to be used in other applications and in other scenarios. Decisions made during the design and implementation phase have a huge impact on the quality and the total cost of ownership of cloud hosted applications and services.
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+<BadgeLink colorScheme='blue' badgeText='Read' href='https://docs.microsoft.com/en-us/azure/architecture/patterns/category/design-implementation'>Design and implementation patterns</BadgeLink>