Once you understand how your system fits in to the overall IT environment, a really useful next step is to zoom-in to the system boundary with a Container diagram. The Container diagram shows the high-level shape of the software architecture and how responsibilities The user or people icon is created using. Software Engineering Radio. This is a C4 Modelling plugin for draw.io, which provides C4 Notation Elements in draw.io. The full definition of your viewpoint is as follows: If you read the C4 Model description (and I really encourage you to do so), youll note that each diagram type is in fact a metamodel and tool agnostic definition of an architecture viewpoint: you can use whatever solution you want to create such diagrams, including pen & paper and drawing tools. Primary elements: People and software systems related to the enterprise in scope. although the "C4" name came much later, around the end of 2011. From one perspective, it's unfortunate that containerisation has become popular, because many software developers now associate the term "container" with Docker. Supporting elements: Infrastructure nodes used in the deployment of the software system. It's a way to create maps of your code, at various levels of detail, in the same way you would use something like Google Maps to zoom in and out of an area you are interested in. In other words, once you have a model, you can visualise it in a number of different ways (images 3 and 4, above), helping to answer the real questions that you are seeking to answer. This applies to diagrams created with notations such as UML, ArchiMate and SysML too, as not everybody will know the notation being used. "The C4 model doesn't prescribe any particular notation. a physical server or device), virtualised infrastructure (e.g. Docker) container. The word "component" is a hugely overloaded term in the software development industry, but in this context a component is a grouping of related functionality encapsulated behind a well-defined interface. Good software architecture diagrams assist with communication (both inside and outside of the software development/product team), The C4 model was created as a way to help software development teams describe and communicate software architecture, both during up-front design sessions and when retrospectively documenting an existing codebase. I did so because I didnt want to maintain two relationships (one for each level of abstraction). If you're using UML (or SysML, ArchiMate, etc) and it's working for you, stick with it. A simple notation that works well on whiteboards, paper, sticky notes, index cards and a variety of diagraming tools is as follows." the core diagrams can be illustrated using UML with the appropriate use of packages, components and stereotypes. Begin typing your search term above and press enter to search. Level 1: A System Context diagram provides a starting point, showing how the software system in scope fits into the world around it. Lets wrap up. At this stage lets ask this simple question: does your CISO know ArchiMate? protocols and other low-level details. And if nobody understands the diagram, nobody is going to look at it. The C4 model was created by Simon Brown, who started teaching people about software architecture, The C4 model doesn't prescribe any particular notation. GUI-based This is an optional level of detail and is often available on-demand from tooling such as IDEs. It automatically changes to the icon. Ask somebody in the building industry to visually communicate the architecture of a building and you'll be presented with site plans, floor plans, elevation views, cross-section views and detail drawings. In a hurry? 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