App Modernization – Trends and Techniques Charumathy Srinivasan Partner Director of Engineering, Microsoft

App modernization

• Market Trends • Why Modernize? Business outcomes • Modernization is a journey • Microservices debunked • Customer evidence

Customers and employees experience

Customers have access to more information on you and your

competitors and expect a good experience

Virtually anywhere, anytime access to information

multi-device, or multi-device and omni-channel and multi-

sense

Analytics insight Support informed decision

making for the future

Today's organizations need to be even more agile to respond to the business needs for growth and innovation

But IT budgets and cost still present an enormous challenge

• Outdated hardware • Legacy software • Old models of doing business

• Maintenance and purchasing • Hardware/Virtual Machine and application

management • Operating the Datacenter • Outsourcing

Applications have shifted to the cloud

Past Long application cycles

Monolithic apps Servers and VMs

Less data Desktop

Distinct infrastructure and operations teams

Today Rapid innovation Loosely-coupled apps, microservices, and containers Serverless Big Data Mobile Service-focused DevOps teams

CaaS Container Platform

On-Premises Infrastructure Platform

PaaS Application Platform

FaaS Serverless Platform

IaaS Infrastructure Platform

“lift & shift”

Reach and engage

Modernize your business by modernizing your apps

Accelerate time-to-market while

reducing costs

Drive innovation

Modernization is a journey

Phase 5 Phase 4 Phase 1 Phase 3 Phase 2

Valu

e #

wor

kloa

ds

• Complete a cloud native platform

• Create organization that develops and runs the cloud platform

• Integrate with current IT • Bring additional workloads live • Establish workload

management (intakes, backlog, priorities)

• Become the standard for innovation

• Customer/ Business focus • Continued platform

development • Scale up to factory model • Additional self-service

functions

• Proof of value • Launching workloads • Playgrounds

• Cloud native service delivery and operations

• Scale up workloads • Development and re-use

of certified services

• Increase maturity • Further reduction

of time to market • Further enable

business innovation

Experiment with cloud

• Customer invests in Cloud • Build Technical Foundation

Modernization Landscape Microsoft Azure

Server machine migration to Microsoft Hyper-V or Azure. (Microsoft Windows and Linux, including Red Hat)

Server

migration

Application migration to a new or updated platform or extension into the public cloud for a hybrid solution.

Application migration

or extension

Remediate or refactor the application for Azure Platform-as-a-Service.

Application

modernization

Combine and reshape platform infrastructure and begin operating in an enhanced model while reducing risk.

Identity migration

Move file server data to hybrid cloud storage or migrate database instances to a modern SQL, MySQL, PostgreSQL or CosmosDB on Azure.

Data &

database migration

on-board users, and establish operational processes.

Cloud Migration Strategies Azure Recommendations

Rearchitect

“Lift and shift”. No-code option

Repackaging. Minimal code changes

Modify or extend existing code to optimize for cloud

scale

On-Premises Infrastructure Platform

Rebuild app from scratch using cloud native technology

Less strategic More Business critical

Lift and Shift

• Apps that are architected to use Azure infrastructure as a server (IaaS) scalability.

• Businesses that require the applications but don’t need to change app capabilities right away.

• Applications or database requirements that can only be met using an Azure IaaS virtual machine.

• Moving the application with no-code changes.

Refactor

• Driving continuous innovation by taking advantage of DevOps and containers.

• When you have an existing codebase and development skills, and code portability is a concern.

• A quick way to modernize your apps.

Rearchitect

• Take advantage of existing application investments.

• Meet scalability requirements in a cost-effective way.

• Bring new Azure capabilities to existing applications.

• Improve agility by applying innovative DevOps practices.

Rebuild

• Building new applications using cloud-native technologies.

• Building innovative apps that take advantage of advancements in artificial intelligence (AI), blockchain, and Internet of Things (IoT).

• Expediting business innovation.

Modernization Trends

Project “Monolith”

The Monolithic Approach to Application Projects (bad)

Middle Tier

UI

Data Tier

Sprints #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12

Quick and dirty… Getting messy but we will clean it up… Start planning a replacement.

Project Timeline

Microservices Architecture

http://martinfowler.com/articles/microservices.html

Microservices Architecture

http://martinfowler.com/articles/microservices.html

“Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure.” -- Melvyn Conway, 1967

Monolithic Microservices

Microservices - Key Benefits • Technology Heterogeneity

– Allow use of different technologies/programming languages. – Leverage new technologies without changing the full code base.

• Resilience – Degrade functionality when services are unavailable rather than fail the entire system.

• Scaling – Only need to scale the services that need scaling, not everything.

• Ease of Deployment – Individual services may be deployed without deploying the entire monolithic

application. • Organizational Alignment

– Small teams may work on manageable components. Works well with distributed teams. • Composability

– The ability to build and maintain durable, reusable components. • Optimizing for Replaceability

– Ability to manage retirement of system components to allow future growth.

Top oil & gas firm accelerates software development to fuel global energy production

“Instead of telling people to wait for six months for a new feature, we can give it to them in a few weeks. Our lead cycles are getting much shorter, and we have business stakeholders involved so that our solutions are more aligned with business requirements.” Johan Krebbers, IT Chief Technology Officer, Royal Dutch Shell

Grant Thornton International Limited rebuilds mission critical application to optimize audits

“Grant Thornton International Limited needed to change a mission critical application and Microsoft Services are enabling this digital transformation. We will have one source of truth for each audit. And that source of truth will be on the Azure environment.“ - Antony Nettleton, Global Leader – Assurance Services, Grant Thornton International Ltd

By adopting Azure and cloud development strategies, GEICO is working to engage with customers more personally and dynamically.

Customers are engaging with us much more frequently and in new and interesting ways. We want to be ahead of the curve when it comes to where the next digital engagement opportunities will occur” - Fikri Larguet, Director of Cloud Services at GEICO,

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