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SaaS
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4
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1
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Depends on application
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1
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FaaS
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3
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2
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Why are hybrid applications so useful in many cases?
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In its general meaning, the word hybrid means something whose parts do not share a uniform architectural choice; each part makes a different architectural choice. However, in the case of cloud solutions, the word hybrid refers mainly to solutions that mix cloud subsystems with on-premises subsystems. However, it can also refer to mixing web subsystems with device-specific subsystems, such as mobiles or any other device that runs code.
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Due to the number of services Azure can provide and the number of design architectures that can be implemented, hybrid applications are probably the best answer to the main question addressed in this chapter: how to use the opportunities offered by the cloud in your projects.
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Nowadays, many current projects are moving from an on-premises solution to a cloud architecture, and depending on where you are going to deliver these projects, you will still find many bad preconceptions regarding moving to the cloud. Most of them are related to cost, security, and service availability.
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You need to understand that there is some truth in these preconceptions, but not in the way people think. For sure, you, as a software architect, cannot ignore them. Especially when you develop a critical system, you must decide whether everything can go on the cloud or whether it is better to deliver part of the system on the edge. Therefore, understanding these factors is key to navigating the hybrid landscape, which ensures that you balance cost, security, and availability according to your specific needs.
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It is worth mentioning a real-life example that might clarify the need for hybrid solutions. Recently, several customers of a SaaS solution we offer objected to the fact that they couldn’t move reserved and business-critical documents to the cloud. Our solution was equipping our SaaS with file-handling drivers capable of retrieving files from an in-house document server located in the customer’s private intranet.
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A completely different kind of hybrid solution is the edge computing paradigm. According to this paradigm, parts of the system must be deployed on machines or devices close to the location where they are needed. This helps to reduce response times and bandwidth.
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Mobile solutions can be considered another classic example of hybrid applications since they mix a web-based architecture with a device-based architecture to offer a better user experience. There are lots of scenarios where you can replace a mobile application with a responsive website. However, when it comes to interface quality and performance, maybe a responsive website will not give the end user what they really need.
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Summary
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In this chapter, you learned how to take advantage of the services offered by the cloud in your solutions, as well as the various options you can choose from.
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This chapter covered different ways to deliver the same application in a cloud-based structure. We also noted how rapidly Microsoft is delivering all these options to its customers, as you can experience all of these options in actual applications and choose the one that best fits your needs, since there is no silver bullet that works in all situations. As a software architect, you need to analyze your environment and your team, and then decide on the best cloud architecture to implement in your solution.
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The next chapter is dedicated to building a flexible architecture comprising small, scalable software modules called microservices.
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Questions
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Why should you use IaaS in your solution?
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Why should you use PaaS in your solution?
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Why should you use SaaS in your solution?
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Why should you use serverless in your solution?
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What is the advantage of using an Azure SQL Server database?
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How can you accelerate AI in your application with Azure?
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How can hybrid architectures help you to design a better solution?
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Further reading
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You can check out these web links to study the topics covered in this chapter in greater depth:
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https://visualstudio.microsoft.com/xamarin/
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https://www.packtpub.com/application-development/xamarin-cross-platform-application-development
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https://www.packtpub.com/virtualization-and-cloud/learning-azure-functions
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https://azure.microsoft.com/overview/what-is-iaas/
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https://docs.microsoft.com/en-us/azure/security/azure-security-iaas
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https://azure.microsoft.com/services/app-service/web/
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https://azure.microsoft.com/services/sql-database/
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https://azure.microsoft.com/en-us/services/virtual-machines/data-science-virtual-machines/
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https://docs.microsoft.com/azure/sql-database/sql-database-automatic-tuning
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https://azure.microsoft.com/en-us/services/cognitive-services/
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https://docs.microsoft.com/en-us/azure/architecture/
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https://powerbi.microsoft.com/
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https://office.com
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https://azure.microsoft.com/en-us/overview/what-is-serverless-computing/
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https://azure.microsoft.com/en-us/pricing/details/sql-database/
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https://www.packtpub.com/virtualization-and-cloud/professional-azure-sql-database-administration
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Learn more on Discord
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To join the Discord community for this book – where you can share feedback, ask questions to the authors, and learn about new releases – follow the QR code below:
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https://packt.link/SoftwareArchitectureCSharp12Dotnet8
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11:1
Applying a Microservice Architecture to Your Enterprise Application
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This chapter is dedicated to describing highly scalable architectures based on small modules called microservices. The microservice architecture allows for fine-grained scaling operations where every single module can be scaled as required without affecting the remainder of the system. Moreover, they allow for better Continuous Integration/Continuous Deployment (CI/CD) by permitting every system subpart to evolve and be deployed independently of the others.
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In this chapter, we will cover the following topics:
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What are microservices?
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When do microservices help?
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How does .NET deal with microservices?
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Which tools are needed to manage microservices?