How to modernize legacy application infrastructure?

#SCALABLEARCHITECTURE
How to Modernize Legacy
Application Infrastructure?

ReigniteBusinesswith
aModernDevOpsReady
Infrastructure
In today’s “always-on” digital world, attaining
business agility goes beyond quick app development
to quick app delivery - all while migrating legacy
systems, improving efficiency and controlling costs.
This encourages DevOps to enter the business
lexicon. But, what exactly does it take to do it right?

Tableof
Contents
4
5
7
9
13
15
18
20
22
23
24
Introduction
DevOps: A Key Building Block of Business Agility
Old Not Gold: Challenges of the Legacy Application
Infrastructure
Four Ways to Swiftly Modernize Enterprise Application
Architecture
8 Reasons Why Modern DevOps is Better than
Traditional IT
Cygnet’s Four Pillars of High-Performing DevOps Strategy
DevOps: How to Modernize Legacy Application
Infrastructure?
Using Integrated DevOps Toolchain to Deliver Scalable
Customer-Centric Innovation with Speed
Quantiﬁable Value Unleashed by DevOps Automation
Potential Business Beneﬁts Delivered by DevOps Approach
Fastrack Your Application Delivery Pipeline with Cygnet

Introduction
IT organizations are relentlessly challenged time and again to deliver new
software applications even faster thanks to the ever-evolving business
dynamics. Meanwhile, incumbent enterprises that once relied on their IT cores
as a source of competitive advantage now expect greater availability (24x7),
speed, resilience and security to achieve business agility and a formidable
scale at a rapid pace. This leads to a surge in the demand for DevOps.
The era of traditional models has dulled the end users’ feeling of
excitement and anticipation for every “full fat” new software release.
Today is about designing short sprints, accept fail fast method, quick
release and rapid scale. It’s about being more agile to ﬁt in the modern
business landscape.
PAGE 4
50% of global 2000 organizations will employ
DevOps strategy by the end of 2020
- Gartner
www.cygnet-infotech.com

DevOps:AKeyBuildingBlock
ofBusinessAgility
DevOps is an arsenal of the most modern tools and technologies that
encouragingly support the process of agile software development. This
software delivery approach is used by the operations and development team
to seamlessly develop, test, deploy and assess applications ensuring speed,
quality, resilience and governance.
DevOps is not just a methodology but an intentional mindset that needs to be
woven into the values and cultural fabric of an organization. Besides, its
adoption is unavoidable to keep your stride at par with high-velocity business
rivals.
AGILE BUSINESSES USING DEVOPS
PAGE 5
PAGE 4
At its core, DevOps is a software delivery
approach that brings people, process, and
technology together through communication
and collaboration. It can foster a continuous
process of the application management
lifecycle with the shortest possible turnaround
time to deliver high business value to the
organization and its customers.

While most IT leaders think DevOps is an antidote to the organization’s
inefficiency, it’s ironic that barriers to its adoption even in willing organizations
exist.
Thebiggestchallengeto
implementingDevOpsariseswhen
yousetouttoModernizeLegacy
ApplicationInfrastructure.
DEVOPS PRINCIPLES:
PAGE 6
Automate
Processes
Continuous
Improvement
Deliver Small
Increments
Cohesive
Teams
Strong Source
Control
Test Early and
Often

Infrastructure management is a fundamental element for any organization
striving to adopt a DevOps approach.
Before charting your DevOps journey, it is imperative to understand why previous
ways of working are obsolete.
Unfortunately, majority of companies face a challenge in maintaining existing
enterprise applications due to critical IT infrastructure issues. Whether that means
adopting agile principles for software applications, hardware and database
integration, enhancing customer digital experience or shifting to newer technologies
such as microservices, cloud computing or serverless computing for delivering
software.
That’s why end-to-end modernization of application infrastructure promises to
address the most immediate pain points and the subsequent issues as they occur.
CONFRONTING CHALLENGES THAT
PREVENT DEVOPS IMPLEMENTATION IN
YOUR ORGANIZATION
PAGE 7
OldNotGold:Challengesofthe
LegacyApplicationInfrastructure
As digital disruptions impose greater demands on IT systems and
organizations, companies must consider an end-to-end approach
for upgrading and managing business technologies.
- McKinsey & Company

Until recently, application architectures were single, unbreakable monolithic in
design and operation. Although consisting of many services, it still operated as a
single unit presenting several operational challenges:
Competitive pressure and growing functional requirements can no longer be
supported by the layered stack of legacy systems. However, these challenges can
be avoided as the DevOps program gears up.
PAGE 8
BRITTLENESS
If any single part of the
application fails, then the entire
application fails.
RISK
Operated as a single unit in the form
of a package, everything fails together
causing system-level outages.
TIGHTLY COUPLED
Tightly coupled integrated networks
hinders the process of upgrading
components of an application
individually.
DEPENDENCIES
Development and operations teams
work in silos to develop, test and
deploy applications, increasing time
and poor productivity

Application Modernization means refactoring or reengineering of
existing business systems to better respond to business needs, cater
to market demand and for data-driven decision making.
FourWaystoSwiftlyModernize
EnterpriseApplicationArchitecture
For most established players, reorienting IT operations around a two-speed
IT architecture - which features stable, transaction- oriented systems on the
back end and fast-changing, customer- facing applications on the front end
—is a prerequisite for implementing both agile and DevOps approaches.
Oliver Bossert, Chris Ip, and Jürgen Laartz, “A two-speed IT architecture
for the digital enterprise”
IT’S TIME TO REORIENT APPLICATION
INFRASTRUCTURE
Companies who are early adopters of digital technologies have revolutionized the
fundamental approach of building and managing application infrastructure.
For instance, a web-native company like Netﬂix has created a cloud-based IT
infrastructure. This allows the operational team to focus on continuous
management of hundreds of microservices hosted in the cloud- each service
managed by a dedicated DevOps team to rapidly design, integrate, test, deliver,
and monitor software changes.
Modernizing makes sense if done correctly. Companies that cannot rely on the
overextended complex legacy applications are looking for ways to move forward
without disrupting the established business processes.

Persisting legacy infrastructure can bring stability issues, lack of support and fear of
leaving behind the swiftly advancing competition. Microservices enable loosely
coupled structuring of an application – allow breaking of a large application into
distinct domains. Each component or service within the system can be managed,
scaled, and monitored individually. Establishing new microservice architecture can
remove deadlocks to faster development and quicker innovation.
PAGE 10
1. MONOLITHS TO MICROSERVICES
Monolithic Architecture Microservices Architecture
UI
Business
Logic
Data
Access
Layer
UI
Microservice
Microservice
Microservice Microservice
Microservice
Microservice

Traditionally, manual deployment of applications is time-consuming and causes a
slow release cycle. Infrastructure as code is an approach to manage and provision
IT infrastructure for continuous deployment using built-in DevOps capabilities or
integrate with Jenkins. It can conﬁgure and deploy server, database, network and
software quickly – fostering speed, reliability and consistency.
2. MANUAL TO AUTOMATED DEPLOYMENTS
Vertical scaling of data resides on a single node often limited to the capacity of a
single machine. It can be scaled spreading the load between the CPU and RAM or
adding more RAM or storage to your machine. However, beyond the capacity, it can
lead to downtime. While horizontal scaling is all about adding more servers to the
cluster of applications to spread the load on separate machines.
3. VERTICAL TO HORIZONTAL SCALING
HORIZONTAL SCALING
(Add more instances)
VERTICAL SCALING
(Increase size of instance
(RAM, CPU etc.))

Modern applications consist of different technology stacks and architectures, from
n-tier to microservices and everything in between. Regardless of the application
architecture, container technology such as Docker container allow portability of code
across multiple environments with the least programming needs. It enables running
an application inside the container; eliminating the interdependencies to rapidly
scale independently and efficiently.
4. STANDALONE TO DOCKER APPLICATION
Docker Build
Docker Pull
Docker Run
Docker Daemon
Containers Images
CLIENT REGISTRYDOCKER_HOST

8ReasonsWhyModernDevOps
isBetterthanTraditionalIT
Understanding the differences between Traditional IT and
Modern DevOps
PAGE 13
With traditional IT approaches, enterprises may experience the complexity due to
disparity between the Developers and Operations team. Such challenges have a
greater impact on the efficiency and performance of the organization. Key synopsis
on the eight key differences observed when DevOps organization as compared to
traditional IT.
Planning&Organization
01
TRADITIONAL IT DEVOPSVS
Large Batch Size: Involves an
inherently complex waterfall method
where huge code is bundled into a
release, leading to slow release cycles.
Micro Batch Size: DevOps believes in
small batch sizes to perform more
frequent releases causing minimal
impact and quick execution.
02
Organization Work in Silos: Disparate
systems, development and operations
teamwork in siloes on different areas
of the applications.
Dedicated Cross-functional Teams:
Consists of developers, testers, business
analysts, and operators, who focus on
only one application to achieve a
common goal and encourages the
“shift left” thinking.
03
Centralized Scheduling: The task of
scheduling falls on the shoulder of one
individual for all employees in the
organization. However, in some cases,
it becomes a bottleneck leading to an
increase in data anomalies and a lack
of visibility with each unit.
Decentralized Scheduling: In a
DevOps organization scheduling is
carried out by a collaborative team
that makes scheduling simpler to
operate.

Performance&Culture
01
High-Risk Software Release: The
process is tightly coupled and requires
participation from all parts of the
organization.
Non-Event Software Release: The
loosely coupled process reduces risk by
integrating code continuously, ensuring
all environments are operating in
synchronization.
02
Disseminated Information: Information
is generated by specialists (e.g.
operations team), bundled together
with other data into a massive report,
which is shared with other team
members but poorly consumed, and
rarely used to take any actions.
Actionable Information: Information is
collected and shared by the
collaborative team which eliminates
the time lag of creating lengthy reports
resulting in faster feedback time.
03
Do Not Fail: Fundamentally a
risk-averse organization focuses on
preventing failure and not harming the
business.
Fail Fast: A DevOps organization
prefers to fail small, fail early, and
recover fast.
Measure
01
Focus on Cost and Capacity:
Development and operations are
solely based on how much can it get
done (capacity) for the least amount of
cost.
Focus on Cost, Capacity and Flow: In
DevOps organization, Flow is the added
aspect to gain visibility on end-to-end
CI/CD operations that help to identify
errors, estimate true productive time,
measure quality, and focus on activities
that add maximum value.
02
Handoff Deadline: Specialists focus on
completing their job and handing off
due to lack of coordination and
collaboration resulting in quality loss.
Ready to Deploy: Every member of the
cross-functional team is accountable
for bringing quality software to the
market.

Cygnet’sFourPillarsofHigh-
PerformingDevOpsStrategy
Accelerating Business Outcomes to build your DevOps
strategy
Cygnet enables your business to achieve the ‘always-on’ state by providing access
to IT services that address issues swiftly while handling any development needs to
reduce time-to-market and improve customer experience.
The ﬁrst step to a successful
DevOps strategy implementation
includes Automation of the existing
processes and SDLC workﬂows,
especially, of repetitive technical
and mundane individual tasks, so
the teams have more room left for
creative problem resolution.
CONTINUOUS DEPLOYMENT
Authoring
Environment
Production
Environment
Testing
Environment
Development Staging
Syndication
of Live Items
Syndication
of Live Items
Development Staging
Delivery
Production
Environment
Testing
Environment
Authoring
Environment
Syndication
of Live Items
Syndication
of Live Items
CONTINUOUS DEPLOYMENT
Build Unit
Test
Docker
Images
CONTINUOUS INTEGRATION
Build Unit
Test
Docker
Images
CONTINUOUS INTEGRATION
Code Review
1.Automation

It involves the entire organization’s mindset and culture to transform monolith to a
microservice architecture, focus on a continuous process of integration, testing and
deployment using tools that enables the team to adopt Docker provisioning,
maintain the application infrastructure and work on small units of the application
rather than working on huge system as a whole.
2.Transformation
1. From Monoliths to
Microservices
2. From standalone
to dockers
3. From Manual deployments
to Automated ones
4. From Vertical to
Horizontal scaling
VERTICAL SCALING HORIZONTAL SCALING
Orchestration is about the automated arrangement, management and
coordination of a large-scale virtual environment or network. It can streamline
and automate multiple processes to support larger interconnected workﬂows,
repeatable processes and operations.
3.Orchestration
AMAZON ECS
INSTANCE
INSTANCE
INSTANCE

It is a cultural aspect of DevOps to bring the Development and Operations team
together to form a more informed and better productive team that can concentrate
on core application development activities and reduce operational overheads.
4.Collaboration
Advanced
Monitoring
Instant Messaging and
Notiﬁcations
Alert
Management
Incident Management
System

DevOps:HowtoModernizeLegacy
ApplicationInfrastructure?
CI/CD Pipeline implementation is the backbone of the modern DevOps
environment. It allows an organization to achieve a 360-degree view on how
DevOps implementation is aligned with the business goals to function faster and
reduce risk with shorter development iterations.
END-TO-END DEVOPS WITH GITFLOW
Bug
Fix
Build
Server
Build
Integration
Test
Performance
Test
Unit
Test
UI Test
Docker
Images
Docker
Registry
SAST
DAST
Dev
Server
Functional
Test
Test
Server Staging Production
Regression
Test
Master Branch
Feature Branch
Development Branch
Test Branch
Release Branch

Gitflow is a collaborative branching model that normally follows the agile process
where the requirement is broken down in the form of epics, use cases and user
stories.
It also enables the team to create branches (Feature, Development, Test and
Release) from a branch called “Master.” Master allows the branches to operate
parallel to each other so the distributed team can work efficiently where each team
member focuses on an individual feature branch. This way each member gets to
cherry-pick features for development, while encouraging frequent commits and
automated testing.
Once the development is committed, it is pushed to the feature branch and
subsequently, a peer review is generated. Using the multi-branch pipeline feature of
Jenkins, an automated pipeline gets triggered, where we define the entire set of jobs
which includes code compilation, creating Docker images, running unit tests and
sonar scanning for any known vulnerabilities in the code.
Once the pipeline is successful, the Git gets notified for PR review. Here we insist the
team leads verify the business logic written and once approved, the feature branch
is merged with the development branch, which in turn triggers another Jenkins
pipeline to deploy the dockers on the dev environment and run different types of
automated testing.
Based on the result, the application gets deployed on the Test environment or the
pipeline will fail and reject the build.
The subsequent movement of builds from Test to staging and then to production
is condition-driven which is based on the test result. In the entire process, one
important aspect to note is the integrity of the builds are maintained, avoiding
“work on my machine” philosophy, which in turn ensures the optimum quality of the
application by letting the app pass through the various stages of validations.

UsingIntegratedDevOpsToolchain
toDeliverScalableCustomer-Centric
InnovationwithSpeed
As companies are rushing to implement DevOps, the entire software development
life cycle (SDLC) is going through a paradigm shift. In the DevOps environment,
integrating toolchain is crucial to maintain a continuous feedback look with
information moving back and forth and logging everything in between as it should
reﬂect and adhere to a common set of business objectives.
OPEN YOUR TOOLSET TO THE REST OF THE ORGANIZATION
SCM TOOLS
CI-CD TOOLS
TESTING TOOLS
PERFORMANCE
TESTING TOOLS
SECURITY
TESTING TOOLS

MONITORING
INCIDENT
MANAGEMENT
TOOLS
COMMUNICATION
CHANNEL
PROJECT
MANAGEMENT
TOOLS
DATABASE
CONFIGURATION
MANAGEMENT
ORCHESTRATION
TOOLS
PACKAGING
TOOLS
AMQP
DB MIGRATION
TOOL
CLOUD
ENVIRONMENT
MANAGEMENT
HA setup for Cluster | HA setup for RMQ | DR of environment
ReplicaSet For Mongo DB | MongoDB sharding

QuantifiableValueUnleashed
byDevOpsAutomation
46times more frequent
code deployments
440times faster lead time
from commit to deploy
96times faster mean time to
recover from downtime
5times lower change
failure rate (changes are
1/5x as likely to fail)

PotentialBusinessBenefits
DeliveredbyDevOpsApproach
Enhanced Testing
Automated testing
can detect defects
early, which can
help reduce costs
and improve time
to market
Reduces Delays
Development and
test teams can
more quickly
deploy code and
meet delivery
deadlines
Quality Apps
Helps improve
application
performance, which
can create operational
efficiencies
Fewer Manual
Processes
Automation can
help eliminate
human error and
reduce costs
Productivity
Gains
Can increase the
productivity and
accuracy of the
development team
Supports Workforce
Uniﬁed development
environment helps
ease the shortage
of legacy
developers
Future-Ready
Prepares the
environment and
developers for
future technologies

FastrackYourApplicationDelivery
PipelinewithCygnet
Working with Cygnet means working with a cross-functional team of experts who
bring the knowledge and support you need to scale new products, platforms and
business models quickly.
Cygnet’s unique DevOps implementation services framework ensures Scalability and
Reliability both at the application and the infrastructure level that too on demand
runtime.
At Cygnet Infotech, we understand the “Speed” it needs when it comes to product
engineering. That is why we assign the “Right People” for the “Right Processes” who
perform the task with “Integrity” and follow the best DevOps practices to fast-track
the delivery pipeline.
Whether you are looking to modernize your enterprise application
infrastructure from traditional software development or DevOps
solution as a service
CYGNET CAN HELP

Cygnet’sDevOps
Capabilities
INFRASTRUCTURE & ENVIRONMENT MANAGEMENT
Cloud Consulting & Management
Infrastructure Automated Provisioning
Incident Management and Reporting
Security Control
Data Backup and Recovery
Infrastructure management sits at the core of any organization aspiring to be
DevOps ready. Cygnet’s DevOps engineers strive to enable better communication
and collaboration across the development and operations team with the primary
goal of continuous development and continuous integration at speed and scale.
DEVOPS CONSULTING SERVICES
DevOps Assessment and Strategy
Planning
Architecting and Tools Stack
Cygnet DevOps engineering services
help formulate and execute a robust
DevOps strategy that perfectly
blends the development and
operations (design, build, test,
deploy and manage) into a
sustainable successful process that
complements agile software
practices.
CONTINUOUS INTEGRATION &
DEPLOYMENT
Release planning and monitoring
Automated Rollouts & Rollback
strategy
Test automation, CI/CD and
deployment
Continuous deployment with
minimum downtime using
"Blue-Green Deployment strategy
Single-click Multi-server
Deployment
Continuous integration and
continuous delivery (CI/CD) are
considered as pillars of DevOps. To
maximize the beneﬁts of DevOps, you
need to build an effective pipeline to
automate the entire DevOps cycle
(build, integrate and test). Achieving
this requires architecting CI/CD for
successful DevOps.

Cygnet Infotech is one of the most trusted names in the IT space
delivering technology solutions to global clients across 35 countries.
Born out of a vision to create software development company where
quality, innovation and personalized services trump low cost,
makeshift solution, Cygnet partners with its client to help them
transform into high performance businesses.
Cygnet has deep industry and business process expertise, global
resources and a proven track record in delivering innovative
technology solutions. Cygnet can mobilize the right people, skills and
technologies that improves business performance.
Automation engineers at Cygnet help clients to discover the
possibilities with RPA. Having developed 55+ chatbots already for a
wide range of business functions and processes, we are poised to
develop a staggering 1000+ software bots in the coming year saving
an enormous number of man-hours for clients to invest their energy in
developing winning business strategies.
We are offering ﬁve free bots to automate any business process in your
enterprise. Connect with us and explore the possibilities now.
ABOUT CYGNET
CONTACT US
USA
Cygnet Infotech LLC.
125 Village Boulevard,
Suite 315, Princeton,
NJ 08540
+1-609-245-0971
+1-609-533-8393
INDIA
Cygnet Infotech Pvt. Ltd.
16-Swastik Society,
Nr. AMCO Bank, Stadium Circle,
Navrangpura, Ahmedabad 380009
+91-79-67124000
UK
Cygnet Infotech Ltd.
Devonshire House
60 Goswell Road, London,
United Kingdom, EC1M 7AD
+44-20-8099-1653
DUBAI
Cygnet Fintech Software
Unit 807, Ubora Tower 2,
Business Bay, Dubai,
UAE, PO Box No.: 418360
+971 52 830 5127
Copyright © 2019 Cygnet Infotech | www.cygnet-infotech.com
inquiry@cygnetinfotech.com
Our 100% Agile
Approach
Creates Value
We Have 1000+
Technology
Enthusiasts
Working with
Global Brands
We Have Delivered
2000+ Enterprise-
Class Solutions &
Products
We Are
"Technology First"
Company
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Transform into
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How to modernize legacy application infrastructure?

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