1. Quality framework for Stepping into the Cloud
Vinod Sundararaju Antony, Director
Cognizant Technology Solutions Ltd.

2. Abstract
Enterprises are increasingly looking at migrating to the cloud. While the benefits of cloud migration have been established, what still concerns CIOs are the costs and risks involved. The cost concerns are negated by return on investment, but risks involved with migration remain a huge concern that needs to be addressed.
Cloud migrations that follow traditional Quality Assurance (QA) processes either tend to overdo and overspend or underspend leaving some risks unaddressed. The success is to adopt a Quality framework developed with Cloud in mind; a framework that is proven in eliminating risks and delivering conscious quality at the right cost.
The end-to-end QA framework presented in this paper, takes into consideration:
Key issues anticipated in cloud migration and the quality aspects to be addressed at each step of migration
Critical migration factors including type of cloud, types of migrations etc., addressing the aspect of quality at optimal cost.

3. Introduction – Cloud is the Digital buzzword!
The benefits are exciting - Cost saving, Optimum resource utilization, Scalability of resources, Less maintainability
71% of businesses expect to have external facing production applications in the cloud by 2017
Cloud is mainstream
Cloud
flavors
Deployment models
Service models

4. Cloud modernization / Re-engineering
Cloud migration & key issues
Migration methodologies
Lift-and-Shift
Lift-and-refit
Cloud modernization / Re-engineering
Cloud migration Key issues
Security
Network
Host Architecture
Identity & Access Mgmt.
Application security & Log Mgmt.
Data Security
Interoperability, Fail over and DR
Performance
Availability
Scalability
Capacity
Infrastructure performance

5. QA framework for cloud migration – balancing risk & cost
An end-to-end QA framework developed with ‘Cloud’ in mind is critical to a successful migration.
Cloud-Centric QA approach
Best practices and checkpoints to ensure smooth and successful migration
Early identification of migration issues
Quality at optimal cost

6. Cloud Centric QA Framework Post migration Testing
QA framework for cloud migration
Cloud-Centric QA strategy / plan
Pre-migration and Post-migration test design
QA Strategy
NFR base-lining
Infrastructure validation tests
Static Pre-migration tests
Cloud Type
Application categories
Technology categories
Migration methodology
Non-Functional requirements (NFR) and baselines
Data workload migration methodologies
Cloud Centric QA Framework
Pre migration Testing
Discovery & Analysis
Post migration Testing
Application /functional validation
Interoperability
Data Validation
Performance
Scalability & Availability
Security
Failover & Disaster Recovery

7. Test Approach – What to test?
Characteristics
Risks
Test Strategy
Rapid Elasticity
Are my applications on Cloud scalable on-demand
Load Testing
Ubiquitous Access of the Application’s Functionality
Are my applications fast & functionally accessible worldwide
Functional Testing
Multi Tenancy
Is my data and network secure
Security Testing
Measured Service
Do the services meet the SLA and defined QoS
QoS Testing
Availability
Is there backup and recovery
Recovery Testing
3rd Party Integrations
Confidentiality and compatibility with other services
Compatibility and Integration Testing

8. Other influencing criteria
Test Approach aligned to Migration Methodology
Testing types
Lift-and-Shift
Lift-and- Refit
Cloud Modernisation
Other influencing criteria
Static Testing
Medium
High
Application validation
Low
Data validation
Interoperability testing
Non-functional testing (performance, availability)
Medium to high depending on level of changes
Business criticality of applications plays a key role in the level of non-functional tests to be performed
Security testing
Cloud type & application characteristics play a key role in the level of tests to be performed
Failover and DR testing
Determined based on criticality of applications etc.
Multi tenancy Testing (SaaS applications)

9. Key Recommendations – Security Testing
Analyse the network isolation levels
Perform external penetration testing
Employ multiple virtual data centres, each on its own virtual LAN, to maintain customer data
Ensure proper server hardening & server configuration management
Perform Application Scan to detect vulnerabilities
Maintain Audit logs securely in separate networks
Network
Host architecture
Identity and access management
Application security and log management

10. Recommendations – Performance Testing
Discovery & Analysis
Test Planning
Pre migration
Post migration
Gather NFRs
Gather existing performance Baselines
Mandate Review Architecture
Define performance QA strategy
Record benchmarks where baselines do not exist
Repeat the load tests and compare the results
Post production monitoring & analysis

11. Recommendations – Data Validation
Data Model Validation
Data Validity Test
Logical data model
Physical data model
Data on the Application UI vs Data on the DB
Validation of data transformation business logic
Data Integrity Testing
Data Consistency Check
Data referential integrity
Constraint Rules
Validation of data volume consistency

12. Conclusion
Adopting a proven QA framework for Cloud migration testing can help in:
Implementing the end-to-end QA strategy for cloud testing
Gaining benefits of tried-and-tested tools and techniques
Early identification and resolution for cloud migration issues
Showed effort savings of about 30% and defects reduction of 12% - 15%when adopted this framework in a recent cloud migration project

13. ROI – Return on Investment NFR – Non Functional Requirement
References & Appendix
Verizon Enterprise Cloud report - State of the Market: Enterprise Cloud 2014
Casualties of Cloud Wars: Customers Are Paying the Price
QA – Quality Assurance
ROI – Return on Investment
NFR – Non Functional Requirement
VM – Virtual Machine
DR – Disaster Recovery
RPO – Recovery Point Objective
RTO – Recovery Time Objective

14. Author Biography
Vinod Sundararaju Antony - Vinod has 16 years of experience in Software Testing and Quality Assurance. Over the years he has taken up a variety of roles such as Global Test Delivery Manager, Quality Consultant and Transformation Consultant. Vinod has extensive experience in Test Delivery, Test Process Maturity consulting, establishing Test Centers of Excellence, defining and delivering Quality Transformation programs and enabling enterprises to improve quality, optimize cost and time to market. Vinod has developed Quality strategy for large Business Transformation programs and has set up Enterprise wide Quality Strategy and processes. Vinod holds a Bachelor of Engineering degree and is PMP & ACP certified.

15. Thank You!!!