1. 28/04/2021
Process Driven Customer Interaction
For Camunda Community Summit 2021

2. SpecialThanks to all my ESP team members

3. Krishna Kumar Nair
Principal Software Engineer @Walmart GlobalTech India

4. Table of
contents
1
Problem
Statement
2
Architecture
Evolution
3
Process
Centric + User
Centric
4
User
Interactions
5
Template
Structure
6
Workflow
CICD

5. Problem Statement
• Business did not had end to end
process visibility
• Code and process tightly coupled
leading to longer releases
• Business process scattered in
multiple layers leading to
cascading updates
1

6. Evolution - 1
2

7. User-Centric vs Process Centric
Users need a rich internet application which can offer them a better visual experience and more
interactivity than traditional browser applications – the type typically represented by the single
page application (SPA) pattern of interface design.This we call it a User-Centric (UC) approach
necessitated by a modern user-interface
In Process-Centric (PC) approach having a Business Process Architecture(BPA) is fundamental.
The BPA provides a hierarchical view of the core business process that’s driving the business.
However, choosing these above approaches (PC or UC) independently leaves us duplicating the
flow at multiple places so there arises a need to combine both and leave the flow of the process to
BPM and only the layout rendering to the user-interface.
3

8. Evolution - 2
4

9. Evolution - 3
5

10. Evolution - 4
6

11. User Interactions
Lifecycles

12. User Interactions - Lifecycles
7
User Provides
Inputs
UserTakes time to fill
in User Input by
interacting with a
Form
User Submits User Waits For
Response
User Edits User Information
User fills in inputs and
submits
After the inputs are
submitted user waits
for response
User Can edit already
entered values and
resubmit
After certain actions
user may get
information from
server

13. 8
User Interactions - Lifecycles
After completing the required inputs, the
user submits
User Submits
Once the inputs are submitted the user
waits for the response to come back from
the server
UserWaits
There are many elements though which user
inputs are captured
User Inputs
User is informed at various
stages of the progress
User Informed
User can edit already entered inputs and
submit back.
User Edits

14. User Edits
9

15. UserWaits
1. There are tasks which are long running and based on a specific business process these can
take varying times to complete.
2. Partners can have varying tasks as long running for various use cases.
3. UI layer should not have fixed polling for every use case. For example, if a task averages 2
minutes, make your GET call at 2 minutes after the submission.
4. The server responds back with a “Poller” task to the UI with details of the poll frequency and
max count of polling and what to display the the user while waiting.

16. • Category
• Inputs
• Display Inputs
• Endpoints
• Current Steps
• Related Steps
Structure of PageTemplate
Page

17. Workflow CICD
LowTouch Deployment

18. CICD Features
Camunda database manages the versions of individual process definition files but it
cannot understand the deployment version. We will be deploying a set of files during
one deployment and the versioning at the group level is important during events of a
rollback
Version Control
Version Management
• Migration info maintained for each
environment and deployment.
• Migration Version Log History
maintained
01;
Migration and Process Validation
• Existing processes definitions not
changeable
• Unit Tests performed to validate
process definitions
02;
AutomatedWorkflow Definition
Rollout and Rollback
• Single Click Deployment and
Rollback.
03;
Backward Compatibility Check
• No Edits allowed on migrated
processes.
• No Duplicate process definition files.
• Previous Migrated files has to pass
the checksum to have a successful
current deployment
04;
Process definitions before migration have to be validated .
Migration and Process Validation
Workflow Process deployment needs to be simplified for the devops management
team just by the click of a button.
Automated Workflow Definition Rollout and Rollback
Preserving the integrity of each deployment is really important and hence backward
compatibility is really important.
Backward Compatibility Check

19. Workflow Migration Start

20. Workflow Migration Ends

21. Questions ?

22. Thank you!();