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Modernizing Applications on Cloud: Effective Strategies for Cloud-Based Transformation


Digital transformation can be empowering on an organizational scale. It can help transform the customer experience, boost innovation, increase agility and flexibility, trim operational expenses, and steer decisions rooted in data.

However, the path to this transformation often has obstacles in the form of outdated IT infrastructures and applications. To genuinely embrace digital transformation, where enterprises fully harness digital tools like artificial intelligence, automation, interconnected devices, and remote collaboration and communication platforms, a comprehensive cloud modernization strategy is imperative. This strategy involves a harmonious interplay of personnel, procedures, and technology.

Multiple forms of modernization, including infrastructure, platforms, applications, and business processes, as well as the promotion of cultural and workplace modernization, can collectively contribute to achieving comprehensive digital transformation. Notably, the progressions made in cloud technology and its associated innovations wield noteworthy influence over each of these modernization dimensions.

Despite the potential gains offered by cloud and modernization, it also brings multiple challenges that need to be planned carefully. The purpose of this white paper is to detail the modernization approach and activate one of the approaches as per the business needs.

Global application modernization

Problem Statement

In today's rapidly evolving digital landscape, businesses are faced with a critical imperative: the need to modernize their existing systems and seamlessly migrate to cloud environments. This amalgamation of modernization and cloud migration presents a multifaceted challenge that demands careful consideration and strategic planning. The problem at hand encompasses a range of complexities, from overcoming legacy constraints to ensuring a smooth and efficient transition that leverages the full potential of cloud technology.

Organizations that did not realize the anticipated advantages of cloud technology might have faced challenges due to attempting a fragmented approach. It is essential for synchronized modernization endeavors to be in harmony with the business and cloud strategies of the enterprise.

Flexera 2022 State of the Cloud Report

Source: Flexera 2022 State of the Cloud Report


A modernization strategy integrated with cloud technology involves a structured plan to transform existing echo systems, processes, and infrastructure using cloud-based solutions. This strategy combines the benefits of modernization with the scalability, flexibility, and cost-efficiency offered by cloud computing. Here's a comprehensive strategy for modernization with the cloud.

With all these good things any modernization/cloud migration brings complexity and challenges around.

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Hence before planning, it required deep thinking and planning. The following factors need to be considered.

  • Business Goals and Objectives:
    • Identify the primary reasons for modernization: Is it to improve performance, enhance user experience, reduce maintenance costs, or meet evolving business needs?
    • Align the modernization strategy with your organization's overall business objectives.
  • Technology Stack:
    • Choose the right technology stack that aligns with your project goals. Consider factors like scalability, compatibility, security, and ease of integration.
  • Legacy Systems Assessment:
    • Assess the existing software's architecture, codebase, and dependencies.
    • Identify legacy components that need replacement, refactoring, or integration with modern solutions.
  • Migration Strategy:
    • Decide whether to rewrite, refactor, re-platform, replace, or retire parts of the existing system.
    • Plan the migration approach based on the chosen strategy.
  • User Experience (UX):
    • Analyze user feedback and requirements to enhance the user experience during modernization.
    • Consider design and usability improvements to align with modern interface standards.
  • Data Migration and Integration:
    • Plan how to migrate and integrate data from the legacy system to the new environment.
    • Ensure data consistency, accuracy, and integrity during the migration process.
  • Security and Compliance:
    • Address security vulnerabilities in the existing system and implement modern security practices in the new architecture. Migration in the cloud could open more security threats.
    • Ensure compliance with industry regulations and standards.


  • Performance and Scalability:
    • Evaluate the performance bottlenecks of the legacy system and design the new architecture for better scalability and performance.
  • Testing and Quality Assurance:
    • Create an all-encompassing testing strategy encompassing unit testing, integration testing, and user acceptance testing
    • Ensure that the modernized software meets functional and non-functional requirements.
  • Change Management and Training
    • Prepare a change management strategy to help users transition smoothly to the new system.
    • Provide training and support to help users adapt to the updated software.
  • Project Management:
    • Define clear milestones, deadlines, and roles within the project team.
    • Continuously monitor the progress and modify/ adjust the plan as necessary to maintain alignment with the set course.
  • Budget and Resources:
    • Allocate sufficient budget and resources for the modernization effort.
    • Consider both immediate expenses and long-term benefits.

By considering the above points we need to make decisions to go with modernization and migration plans for each application one by one by seeing the larger business objective.

  • Rewrite: Consider rewriting an application when its existing codebase is outdated, difficult to maintain, lack of scalability, or fails to meet modern business requirements and to get maximum benefit from cloud computing.
  • Refactor: Opt for refactoring when your application's functionality is valuable, and its codebase can be improved without major rewrites. Refactoring enhances code quality, maintainability, and performance. For example, refactor your application in microservices, etc.
  • Re-platform: Consider re-platforming when your application needs modernization without altering its core functionality. Re-platforming involves migrating to a new platform or framework, and enhancing scalability, security, and performance while retaining existing features.
  • Replace, or retire: Retire an app when it's no longer useful, relevant, or cost-effective. If it lacks users, incurs high maintenance, or doesn't align with business goals, consider discontinuing.


Customer experience and expectations are changing at a faster rate; hence IT continues to be under intense pressure to increase agility and speed up delivery of new functionality to align with growing business needs.

To adapt to this rate of change, modernization and cloud migration is a must for enterprises. Most enterprises across industries are modernizing existing applications by considering cloud native and CAAS (container as service) as a first choice. Enterprise also leveraging microservice architecture or they are in the process of decomposing monoliths application into microservice to gain benefits provided by cloud/containerization architecture. To natively support scalability k8s (Kubernetes) being heavily utilized now a days.


Author Information

Deepak Saini

Shrwan Kumar

Extensive experience in cloud computing, design, and development of Enterprise applications. He is an AWS Certified Architect and Google Certified Professional Cloud Architect with 18 years of hands-on IT experience in the area of architecture, design, development & delivery of IT Solutions for large and international businesses.

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