# - Definitions

  • #

    12 factor app (twelve-factor app)

    Twelve-factor app is a methodology for building distributed applications that run in the cloud and are delivered as a service. The approach was developed by Adam Wiggins, the co-founder of Heroku, a platform-as-a-service which is now part of Salesforce.com.

  • 3-tier application architecture

    A 3-tier application architecture is a modular client-server architecture that consists of a presentation tier, an application tier and a data tier. The data tier stores information, the application tier handles logic and the presentation tier is a graphical user interface (GUI) that communications with the other two tiers.

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