Migration to the Cloud for a global enterprise infrastructure

The definition of numerous cloud computing models has made mainstream the access to virtualized resources of all kinds. The intensive use of Cloud resources allows many companies to maximize their efforts towards their core business, leaving to cloud providers the costs of building and maintaining physical infrastructures on which many services are based. In this master's thesis work, we analyze in detail how the company has approached its IT infrastructure migration to the Cloud. Starting from the design principles on which the company built its on-premises IT infrastructure, we deepen how these principles are "tailored" and enriched with proprietary patterns of the Azure cloud provider to be able to migrate company assets and services to the Cloud. The advantages and potential of the virtual world in networking are explored. The result is a robust and secure network to support all business activities, including in-house application development. Models such as IaaS, PaaS and SaaS are being analyzed in the context of implementations in different network scenarios, identity management and application development. Finally, the evolution of the architecture of a business application towards a microservices model is detailed, relying on the flexibility and power offered by the Cloud.