1. PowerApps, the
Developer Story: Build an
API to Integrate
Corporate Data
Bram de Jager
Lead Architect, Delaware Consulting, The Netherlands

2. What about every other need your
other need your business faces?
business faces?

3. Secure
Scalable
Managed
Integrated
Compliant
Fast
Iterative
Cross-platform
Beautiful
Easy
VS

4. Trends
Mobile business
process will go mobile
“50% of business processes
that involve human tasks
will require near-real-time
responses that are mobile-
enabled” (Source: Gartner 2014)
Expectation gap
between business & IT
Resourcing is
constrained & shifting
“Through 2017 market demand
for mobile app dev. services
will grow at least 5X faster than
internal IT organization
capacity to deliver” (Source:
Gartner 2015)
“By 2020, 70% of enterprise
mobile apps used in
enterprises will be developed
or adopted without IT
involvement” (Source Gartner
2016)
Real world business
process cross multiple apps
and cloud services
Information & technology
still fails to meeting
expectations of business
users

5. Connect to existing systems and
data sources
Microsoft PowerApps is a service for creating and using custom business
apps across platforms
Build apps, forms, and workflows
without writing code
Publish apps instantly for
web and mobile

6. Build useful apps without writing code
Craft forms and screens in a visual
designer that helps you see exactly
what you’ll get
Take advantage of device
capabilities like cameras, GPS, and
pen controls
Extend the capabilities of
connected data sources, or focus
just on the bits you need
Build business logic into your apps
with an Excel-inspired expression
language

7. Quickly generate and customize apps based
on Excel files, SharePoint Online lists,
Salesforce records and more. You can even
connect custom APIs.
Your apps will be able to fully interact with
underlying sources and will respect the
permissions you’ve already established in
them.
Connect to the systems
you’re already using

8. Get apps to your team when and where they’re needed,
whether that’s on the web, iOS or Android—no app store
required.
Publish apps instantly for web
and mobile

9. Build modern business apps fast
Compose analytics, user experiences, and automation
using an integrated set of services from Microsoft
More efficient developers
Seamlessly extend capabilities for power users and
leverage powerful Azure platform services
Business application platform
Empowered power users
People who understand their business needs best can
now build apps quickly without writing code
Connected data across apps
Whether built on the Common Data Model or integrated
with existing systems, get more value from your data
Azure AppServices
Azure Functions
…
Azure Logic Apps
Azure API Management
…
Azure Data analytics
SQL Server BI
…

10. Operational data store
Common Data Model
and custom entities
Real time
sync
Data
API
Common Data Platform
Backbone for your business data

11. PowerApps and Flow preview
Public preview from the beginning of May till GA in October
124,000+
creators
46,000+
organizations
143
countries

12. Now, let’s build some stuff!
PowerApps, the Developer Story: Build an API to Integrate Corporate Data

13. Visitor Registration app
Business scenario
Reception welcomes visitors during the day
It’s unclear for the receptionist who is inside the building
For safety regulation a list of people accessing the building needs to be available in case
of emergency
Business need
The app should support the registration process
Visitors need to register themselves to prevents misspelling names
On arrival a visitor needs to check-in
On departure the visitor needs to check-out

14. Developing Azure API App
for PowerApps
PowerApps, the Developer Story: Build an API to Integrate Corporate Data

15. APIs in PowerApps
Tons of out-of-box APIs ready to use
Expose your own APIs hosted anywhere
Automatic AAD authentication
Advanced user based authorization
API definition discovery
Connectivity to SaaS systems, data in cloud or on-premises

16. Custom APIs
REST APIs used to connect with 3rd party services
Authentication supports Basic Auth and OAuth 2.0
Register the custom API using Swagger definition
Use the function in PowerApps or Flow like any other function

17. Swagger
What is Swagger?
A simple yet powerful representation of a RESTful API
Swagger enables: interactive documentation, client SDK generation and discoverability
Open source standard, language-agnostic interface to REST APIs
How do I use Swagger in my project?
ASP.NET Web API project » Install the Swashbuckle NuGet package
Azure API App » supports Swagger 2.0 API metadata out of the box

18. What’s required to get started?
Prerequisites
Visual Studio 2015 with the Azure SDK for .NET with Azure App Service Tools v2.9.1 or
higher
Azure account with Azure App Service
Office 365 account with PowerApps

19. Quota and throttling
You can create up to five custom APIs in a PowerApps account. Custom APIs that
are shared with you don't count against this quota.
For each connection created on a custom API, users can make up to 500 requests
per minute.
Keep in mind that deleting a custom API deletes all the connections created to the
API.

20. Hook up our PowerApp
with an Azure API app
PowerApps, the Developer Story: Build an API to Integrate Corporate Data

21. Demo steps
Build a Azure API App from scratch
Deploy API App to Azure
Add the API App to PowerApps
Use the API App within a PowerApp

22. Scenario
Visitor comes in and registers with barcode
Meeting is being retrieved from MeetingsApi based on barcode
Visitor selects his details to check in
App shows overview of check in information
Visitor confirms check in
App updates the ‘Visitors Registration’ list in SharePoint

23. Steps for this screen
Scan the barcode
Retrieve the meeting from the MeetingsApi
(custom Azure API)
Show meeting details
Click Next-button
Set Textbox.Text function
MeetingsApi.MeetingsGetByBarcode(BarcodeC
ontrol.Text).Subject

24. Steps for this screen
This screen shows the registered attendees for
the selected meeting (from the previous screen)
The data is retrieved from the MeetingsApi
Select one of the attendees to navigate to the
next screen
Set Gallery.Items function
MeetingsApi.MeetingsGetByBarcode(BarcodeC
ontrol.Text).Attendees
Set Arrow.OnSelect function
Navigate(CheckInScreen,ScreenTransition.Non
e)

25. Steps for this screen
This screen shows the selected attendee (from
the previous screen)
Enter license plate (txtLicensePlate)
When the Check in-button is clicked the
SharePoint list ‘Visitors Registration’ is updated
with data from the MeetingsApi.
CheckIn and LicensePlate fields are updated.
Set Button.OnSelect function
UpdateIf('Visitor
Registration',Title=Gallery.Selected.Fullname,{C
heckIn:Now(),LicensePlate:txtLicensePlate.Text
})

26. Update is performed on this list item. Based on
Gallery.Selected.Fullname with value “Emma Lowton”
Columns LicensePlate and CheckIn are updated
from the formula
1
2

27. Wrap-up
PowerApps, the Developer Story: Build an API to Integrate Corporate Data

28. PowerApps packaging
• Included with O365 and D365
workloads
• PowerApps & Flow capabilities
• Create & run within the context
of Office 365 and Dynamics
365 data sources
Quotas (per user; pooled tenant-
wide):
• 2.000 flow runs per month
• PowerApps & Flow capabilities
• Access Common Data Model
and premium connectors
• Run any app or flow & build
against any existing data
source
Quotas (per user; pooled tenant-
wide):
• 4.500 flow runs per month
• 20 MB Data Storage
• 2 GB File Storage
• Included in full D365 Plans
Includes everything in P1, plus
• Create any app or flow
• Model your business data and
create custom entities (CDM)
• Create/manage environments
• Set policy and view usage
Quotas (per user; pooled tenant-
wide):
• 15.000 flow runs per month
• 200 MB Data Storage
• 20 GB File Storage

29. PowerApps & Flow roadmap
Q4 Calendar 2016 H1 Calendar 2017
oPower BI integration across the platform
oSolution packages
oPro-developer control extensibility
oRe-usable, dynamic business process & logic
oCommon Data Platform Office 365 data sync
oEnhanced mobile Flow integration
oExtended Common Data Platform security model
oEmbedded, in-context SharePoint Online
oAdditional embedded experiences
oSovereign cloud deployments

30. Connect to existing systems and
data sources
Microsoft PowerApps is a service for creating and using custom business
apps across platforms
Build apps, forms, and workflows
without writing code
Publish apps instantly for
web and mobile

31. Enjoyed this session?
Call to action, provide feedback!
Don’t forget to rate this session at
sharepointeurope.com/MyESPC16
Related sessions
Build business apps for Office 365 - InfoPath, PowerApps, Flow and more
Wednesday 16:45 - 17:45 | W33 | Chris McNulty
Discover PowerApps with SharePoint - Is it a Good Fit?
Thursday 15:15 – 16:15 | Th31 | Benjamin Niaulin

32. Thank you
@bramdejager
bram.dejager@delawareconsulting.com
http://bramdejager.wordpress.com