Introduction
This blog is about SharePoint Provider Hosted Add-in Trust
Types. It provides the details for kind of trust types to be used while
deploying the SharePoint Provider Hosted Add-in on different hosting
environment.
About SharePoint Provider Hosted Add-in
Microsoft has officially renamed the SharePoint provider
hosted App as SharePoint Provided Hosted Add-in. The provider hosted add-in can
be installed on SharePoint on premises server or in SharePoint online platform
but the key business logic component is deployed outside the SharePoint
environment which provide us the flexibility to go with any programming
language. The SharePoint hosted app has to be designed with client side
programming framework and in any ways server side coding is not allowed in
SharePoint hosted app.
In SharePoint provider hosted Add-in you have option to host
it with your required hardware choice. You can ask your IT department to host
the add-in on dedicated server or
any third party hosting service. Azure is one of the good suggestion for
hosting the add-in. The provider hosted app can also use the SharePoint
standard stuffs for any business requirement but the SharePoint standard stuff
will run on SharePoint environment.
 |
| Courtesy: Microsoft Docs |
The provider hosted add-in will use OAuth or JSOM to
communicate with standard SharePoint components. The Microsoft Azure Access
Control Service (ACS) is playing trust broker role when this SharePoint
provided hosted add-in is hosted on Azure and installed on O365. If the add-in
is installed in SharePoint on premises server then it needs server certificate
along with ACS to enable high trust between add-in and SharePoint.
Trust Types Details
Below table illustrates the kind of trust required in
SharePoint Provider Hosted Add-in and SharePoint according to its various
deployment and installation places.
|
Trust Type
|
SharePoint Add-in Location
|
SharePoint Platform
|
Comments
|
|
ACS
|
Azure or Any Cloud Service
|
SPO
|
ACS trust will be used when add-in is deployed on Azure
|
|
ACS
|
On Premises
|
SPO
|
“”
|
|
ACS + Certificate
|
On Premises
|
On Premises
|
ACS + certificate will be required in case of SharePoint on premises
and add-in deployed on premises
|
|
ACS + Certificate
|
On Cloud
|
On Premises
|
“”
|
SPO - SharePoint
Online
ACS - Azure
Access Control Service
Conclusion
My objective here is to update the tech community about
latest changes done my Microsoft about the naming convention of the SharePoint
Provider Hosted Add-in. This blog also educate the techies for various kinds of
trust type for SharePoint Provider Hosted Add-in and which needs to be used in
what deployment scenario. This knowledge is important to the peoples before
taking the work in hand.
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