View source for PAV.Application Hosting.Cloud - Internal Access Only Best Effort

{{Maturity|3}}
{{Pageheaderbox4PatternVariant
|PAVname=Cloud - Internal Access Only Best Effort
|summary=Application Hosting at a cloud provider, for non-critical applications that are only used internally.
|version=0.22
|owner=S.A.D. Jumelet
}}
{{PAV PAT row
|pat=PAT.Application Hosting
}}
{{Table Ending}}
{{Purpose section
|text=This solution is intended to be used for experimental and/or short-term business application hosting needs. It is intended for internal access/use only, and should be made available to end users through the Cloud Portal, that serves as an interface to applications of the intended type. Because this solution is intended to be delivered very fast, changes to the standard solution cannot be made.
}}
{{Description Area
|description=This Pattern Variant defines the implementation outline of a solution that provides best effort application hosting, making use of a Cloud service.
|annotate=yes
}}
{{Section
|header=Characteristics &amp; indications of usage
|text=* Very fast delivery for experimental and/or short-term business application hosting needs
* Only internal access allowed to hosted applications
* Only best effort availability guaranteed
* Makes use of Cloud Providers standards, it is not possible to implement additional features
* Should make use of Cloud Integration solutions that are in place already, if needed:
** Data Management - Cloud Internal Usage
** Asynchronous Messaging - ESB
** Workflow Orchestration - Common Cloud Application Direction
* Makes use of internal Authentication & Authorization services, no additional Identity & Permission validation facilities are allowed.
}}

{{PAgraphic
|graphic=PAV.Application Hosting.Cloud - Internal Access Only Best Effort.png
|source=PAVs Application Hosting.vsd
|size=600px
|title=Application Hosting.Cloud - Internal Access Only Best Effort
|kind=Variant
}}
{{Pattern Variant Composition}}
{{Pattern Variant Composition Row
|bbv=BV.Application Engine.Cloud - Internal Use Best Effort
|environment=ENV.External
|reason=This facility provides a run-time environment for the execution of application code, based on Cloud Provider standards.
}}
{{Pattern Variant Composition Row
|bbv=BV.Presentation.Cloud - Internal Use
|environment=ENV.External
|reason=This facility provides a user interface to the application that is executed by the Application Engine and formats data that is being exchanged by the application, for example application messages.
}}
{{Pattern Variant Composition Row
|bbv=BV.Presentation Aggregation.Cloud Portal - Internal Use
|environment=ENV.Data Centre.Back-end
|reason=All Cloud applications should be accessed by end-users through a centralized Cloud Portal, in order to be able to centralize user access to Cloud applications, including Identity Validation and Auditing activities.
}}
{{Pattern Variant Composition Row
|bbv=BV.Control Interface.Cloud Platforms
|environment=ENV.External
|reason=All Cloud applications of a specific Cloud Service Provider should be managed through a shared Control Interface.
}}
{{Table Ending}}
{{Pattern Variant Neighbors}}
{{Pattern_Variant_Adjacent_PAV_Row
|pattern=PAV.Authentication+Authorization.Internal users
|reason=Manages the Identity and Permission Validation to permit usage of the application that is supported by the Application Hosting solution.
}}
{{Pattern_Variant_Adjacent_PAV_Row
|pattern=PAV.Workflow Orchestration.Common Cloud Application Direction
|reason=Handles application scheduling and transaction coordination in a centralized way for Cloud applications.
}}
{{Pattern_Variant_Adjacent_PAV_Row
|pattern=PAV.Asynchronous  Message Handling.ESB
|reason=Handles application messaging in a centralized way. For both internal as for Cloud applications.
}}
{{Pattern_Variant_Adjacent_PAV_Row
|pattern=PAV.Data Management. Cloud – Internal Use
|reason=Takes care of logical and physical storage of Cloud Application Hosting solutions. Because of it's internal use, legal restrictions apply to this type of Cloud Data Management.
}}
{{Table Ending}}
{{PAV Elements prescription}}
{{Elements Prescription Table}}
{{Table Ending}}
{{PAV Quality Description
|adaptability=C
|scalability=up and down
|manageability=Best-Effort
|accountability=MP
|availability=Best-Effort
|integrity=Low
}}
{{PAVfooter}}