Changes

<span style="font-size: 1.5em;">[[GC_Application_Enterprise_Architecture | 3. Application Architecture]]</span> <br><br>

<span style="font-size: 1.5em;">[[GC_Application_Enterprise_Architecture | 3. Application Architecture]]</span> <br><br>

<b><I><u>Use Open Source Solutions hosted in the Cloud</b>

<b><I><u>Use Open Source Solutions hosted in Public Cloud</b>

* Select existing solutions that can be reused over custom built

* Select existing solutions that can be reused over custom built

* Contribute all improvements back to the communities

* Contribute all improvements back to the communities

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<b>Use SaaS hosted in the Cloud</b>

<b>Use Software as a Service (SaaS) hosted in Public Cloud</b>

* Choose SaaS that are extendable

* Choose SaaS that best fit for purpose based on alignment with SaaS capabilities

* Align with SaaS capabilities; extend as Open Source modules

* Choose a SaaS solution that is extendable

* Configure SaaS and if customization is necessary extend as Open Source modules

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<b>Design for [https://www.gcpedia.gc.ca/wiki/En/GCinterop Interoperability]</b>

<b>Design for [https://www.gcpedia.gc.ca/wiki/En/GCinterop Interoperability]</b>

* Design systems to be highly modular, loosely coupled and aligned to Business Capability Model 2.0

* Design systems as highly modular and loosely coupled services

* Use micro services scoped to a single purpose and API-led connectivity

* Expose services through APIs  

* Expose functionality as services, make services available through APIs and make the APIs discoverable

* Make the APIs discoverable to the appropriate stakeholders

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