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The Twelve-Factor App methodology is a guide for building software as a service (SaaS) applications. These best practices are designed to enable applications to be built with portability and resilience when deployed to the web. Developers building large-scale applications on platforms such as Heroku popularized the Twelve-Factor App methodology.
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Domain driven design (DDD) is an approach to software development for complex needs by connecting the implementation to an evolving model.
• Placing the project’s primary focus on the core domain and domain logic.
• Basing complex designs on a model of the domain.
• Initiating a creative collaboration (using a Ubiquitous
Language, or UL) between technical and domain experts to iteratively refine a conceptual model that addresses particular domain problems.
Publisher: Addison-Wesley Professional; 1 edition (August 30, 2003)
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