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<!-- COLUMN 1 STARTS: --><span style="font-size: 1.5em;">[https://wiki.gccollab.ca/GC_Application_Enterprise_Architecture <b><<Application Architecture</b>]</span>
<span style="font-size: 1.5em;">[https://wiki.gccollab.ca/GC_Application_Enterprise_Architecture <b><<Application Architecture</b>]</span>
   
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<!-- COLUMN 2 STARTS: --><span style="font-size: 1.5em;">[https://wiki.gccollab.ca/GC_Security_and_Privacy_Enterprise_Architecture <b>Security Architecture>></b>]</span>
<span style="font-size: 1.5em;">[https://wiki.gccollab.ca/GC_Security_and_Privacy_Enterprise_Architecture <b>Security Architecture>></b>]</span>
   
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==Use Cloud first==
 
==Use Cloud first==
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* ''Adopt the Use of the GC Accelerators to ensure proper Security and Access Controls - Azure, AWS''
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** These accelerators provide templates for deploying systems that have been review by ???
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** For the Azure Accelerators, both the ARM (Azure Resource Manager) and Terraform formats are provided
 
* Enforce this order of preference: Software as a Service (SaaS) first, then Platform as a Service (PaaS), and lastly Infrastructure as a Service (IaaS)
 
* Enforce this order of preference: Software as a Service (SaaS) first, then Platform as a Service (PaaS), and lastly Infrastructure as a Service (IaaS)
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** SaaS offers a managed service  ...
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** PaaS offers  ...
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** IaaS offers quick scalability compared to running your own servers, but leaves it up to you to patch an configure your infrastructure.
 
* Enforce this order of preference: Public cloud first, then Hybrid cloud, then Private cloud, and lastly non-cloud (on-premises) solutions
 
* Enforce this order of preference: Public cloud first, then Hybrid cloud, then Private cloud, and lastly non-cloud (on-premises) solutions
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** Public cloud provides ...
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** Hybrid cloud provides ...
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** Private cloud provides ...
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** On-Premises provides ...
 
* Design for cloud mobility and develop an exit strategy to avoid vendor lock-in
 
* Design for cloud mobility and develop an exit strategy to avoid vendor lock-in
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** SaaS and PaaS remove the overhead of maintaining your own infrastructure, but can
    
==Design for Performance, Availability, and Scalability==
 
==Design for Performance, Availability, and Scalability==
 
* Design for resiliency
 
* Design for resiliency
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** [https://principlesofchaos.org/?lang=ENcontent Chaos Engineering]
 
* Ensure response times meet user needs, and critical services are highly available
 
* Ensure response times meet user needs, and critical services are highly available
 
* Support zero-downtime deployments for planned and unplanned maintenance
 
* Support zero-downtime deployments for planned and unplanned maintenance
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** As your applications attract additional consumers, being able to introduce changes and patching without negotiating outages becomes more important
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** [https://martinfowler.com/bliki/BlueGreenDeployment.html Green Blue deployment]
 
* Use distributed architectures, assume failure will happen, handle errors gracefully, and monitor actively
 
* Use distributed architectures, assume failure will happen, handle errors gracefully, and monitor actively
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** Today much of the distributed architectures rely on the [https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/ Kubernetes (k8s)] architectures
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** <nowiki>https://opentracing.io/</nowiki>
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* ''Establish architectures that supports new technology insertion with minimal disruption to existing programs and services''
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* ''Control Technical Diversity - design systems based on technologies and platforms already in use.''
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