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Digital Transformation | EN

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Operationalization in Practice

Architecture is an

Architecture is an expression of values. Norman Foster Discipline of APPLICATION ARCHITECTURE Elevator Pitch The discipline of application architecture describes a high-capacity architecture for implementing the business architecture on the application level. It specifically includes the cloud, with its three orthogonal dimensions: Services can be developed and provided in the cloud; even services from third-party providers can be integrated on the cloud. Focus On the operational level, the discipline of application architecture is responsible for the architecture of a concrete application. In this context, the strategic alignment of the IT architecture influences the architecture of an application, an influence that is taken into consideration by this discipline. Method from the architectures of traditional enterprise applications. Agile approaches should be used to develop architectures for the cloud, in order to satisfy the requirements for a native cloud architecture. The New Architectural Modules A central task of the application architecture is to map the business objects, business processes and services from the business architecture to the component model of the cloud. The component model of the cloud consists of apps and services, with apps being the tool used to make the application available to the customer on any end device. The services, in turn, are used by the apps and provide technical and business functions. Within this context, services can be offered or provided on an Internet market place for a fee, can be used locally in the cloud to structure or modularize the application or can be used in the Internet to integrate existing services, such as Amazon, PayPal or enterprise services. Application Architecture in the Cloud The purpose of the application architecture discipline is to develop an architecture for applications used in the cloud. The cloud poses a new context for architectures, a context referred to as a cloud-native architecture 8 . It uses new maxims, principles and patterns; all of which must be reflected in the architecture in the form of new organizational, non-functional and technological requirements. Architectures in the cloud differ significantly New Architectures for Technological Trends The use of technological trends and the integration thereof have resulted in the need for new architectural approaches in the cloud. A prime example is the field of social media, where a large number of APIs exist that are offered by a wide range of providers, from Amazon to PayPal to Twitter. Integrating these APIs requires the use of a resource-oriented architecture (ROA), as well as 32 | The Method: Digital Transformation Cycle

Desktop Mobile Wearables Partner Web-API Web-API App App Service Service Web-API Service Service Service Web-API Marketplace Twitter Facebook Figure 8: The Component Model of the Cloud the corresponding skills and experience with handling Web APIs. The Internet of Things - that already has 700 billion nodes that deliver vast quantities of data in a matter of seconds - requires an architecture that is perfectly aligned with the ROA in order to reduce bandwidths and network complexity, while making data processing effective and efficient. Some of these aspects have already been realized by innovative forms of communication such as MQTT or WebSockets. Terabytes of data, real-time inquiries and the requirement that data be stored unstructured all mean that big data architectures must be used and those structures are realized using platforms like Hadoop 9 . Data analysis, business intelligence and the latest trends in the business intelligence environment, such as real-time analytics, for example, all need suitable architectures, like the Lambda architecture 10 . Engagement - The Challenge Business models must be adapted to ensure an excellent customer experience and, in doing so, the points of engagement must be connected - meaning mobile, apps, point of sale or even partners. When connected via APIs they form the system of engagement. This requires professional API management. The API management is responsible for the design, as well as the publishing and monitoring of APIs. The cloud integrates API management tools, such as the WS02 API Manager 11 or the Apigee API Exchange 12 , which allows it to offer professional API management services. Results The result of the application architecture is the IT concept, consisting of the following profiles: context, functional, information, concurrency, developer, deployment and operational. The Method: Digital Transformation Cycle | 33

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