On-Premise to Cloud Migration - Unlocking the Power of Cloud Transformation with Sigmoid


On-premise to cloud migration refers to the process of moving data, applications, systems, or an entire IT infrastructure from an on-premise environment (physical servers or data centers located within an organization's premises) to a cloud-based infrastructure or platform.


Migrating from on-premise infrastructure to the cloud has become a pivotal move for businesses aiming to enhance scalability, agility, and innovation. Sigmoid, a leading data analytics company in the US, specializes in facilitating seamless on-premise to cloud migration, empowering organizations to unlock the full potential of cloud technology.

What is On-Premise to Cloud Migration?

On-premise to cloud migration refers to the process of transferring an organization's applications, data, and IT resources from in-house servers or data centers to cloud-based infrastructure. This migration involves transitioning from a traditional, fixed IT infrastructure model to a scalable and flexible cloud environment.


The migration involves transferring various components such as databases, software applications, servers, storage, networking resources, and more, from the organization's own hardware to cloud service providers' infrastructure. This shift allows businesses to take advantage of the benefits offered by cloud computing, including scalability, flexibility, cost-efficiency, and accessibility.

The process typically involves several steps:

  • Assessment and planning: Understanding the existing on-premise infrastructure, evaluating the data and applications to be migrated, determining dependencies, and planning the migration strategy.
  • Selecting the right cloud service provider: Choosing the appropriate cloud service provider(s) based on factors like service offerings, security measures, compliance, pricing, and scalability.
  • Data migration: Transferring data from on-premise storage systems to cloud storage solutions. This might involve using various methods such as bulk transfer, incremental sync, or leveraging specialized tools provided by the cloud provider.
  • Application migration: Rehosting, refactoring, or rearchitecting applications to make them compatible and optimized for the cloud environment. This step might involve redesigning applications to leverage cloud-native services or reconfiguring them to work with the chosen cloud platform.
  • Testing and validation: Thoroughly testing the migrated data, applications, and systems to ensure functionality, performance, security, and compatibility in the new cloud environment.
  • Deployment and optimization: Deploying the migrated systems in the cloud and continuously optimizing them for improved performance, cost-efficiency, and security.
  • Monitoring and maintenance: Regularly monitoring the cloud infrastructure to ensure smooth operation, addressing any issues, and applying updates or patches as necessary.

Benefits of On-Premise to Cloud Migration:

The benefits of migrating from an on-premise infrastructure to the cloud are extensive and multifaceted. Here's a detailed breakdown of these advantages:

  • Scalability and Flexibility: Cloud environments offer unparalleled scalability, allowing businesses to easily scale resources up or down based on demand. This agility enables organizations to efficiently handle fluctuations in workload without the need for significant upfront investments in hardware.
  • Cost Efficiency: Cloud migration often reduces capital expenditure by eliminating the need for on-premise hardware and associated maintenance costs. Instead, cloud services typically operate on a pay-as-you-go model, where businesses pay only for the resources they use.
  • Enhanced Security and Compliance: Reputable cloud service providers invest significantly in security measures, including encryption, firewalls, identity and access management, and compliance certifications. This often surpasses the security capabilities of many on-premise setups, providing businesses with robust security features and ensuring compliance with industry standards and regulations.
  • Improved Performance and Accessibility: Cloud providers offer robust infrastructure and global data centers, resulting in improved performance, reduced latency, and enhanced accessibility from various locations. This accessibility enables remote work and facilitates collaboration among teams in different geographical locations.
  • Global Reach and Collaboration: Cloud services provide a platform for global reach and collaboration, allowing teams to work together seamlessly irrespective of their geographical locations. This promotes real-time collaboration, fosters innovation, and streamlines workflows.
  • Environmental Sustainability: Cloud infrastructure providers often operate more efficiently and at larger scales, resulting in lower carbon footprints per unit of computation. This can contribute to an organization's sustainability goals by reducing energy consumption and supporting eco-friendly initiatives.
  • Focus on Core Business Objectives: With the responsibility for infrastructure management shifted to the cloud provider, organizations can focus more on their core business objectives, innovation, and delivering value to customers rather than managing hardware, upgrades, and maintenance.

Challenges of On-Premise to Cloud Migration:

Migrating from an on-premise infrastructure to the cloud offers numerous benefits, but it also presents several challenges that organizations need to address. Here's a detailed overview of these challenges:

  • Data Security and Privacy Concerns: Security is a primary concern during migration. Organizations must ensure that sensitive data remains secure during the transfer process and after it's hosted in the cloud. Compliance with industry regulations and maintaining data privacy are critical aspects that need careful consideration.
  • Complexity of Migration Process: The migration process itself is complex and involves transferring diverse workloads, applications, and data. Compatibility issues may arise, requiring modifications or redesign of applications to function optimally in the cloud environment.
  • Downtime and Business Disruption: Migrating from on-premise to the cloud may lead to downtime, impacting business operations. Minimizing this disruption requires careful planning, scheduling migrations during off-peak hours, and implementing strategies for data synchronization and failover.
  • Costs and Budgeting Challenges: While the cloud offers cost savings in the long run, the initial migration can be costly. Organizations may face unexpected expenses due to data transfer, reconfiguration, and training employees on new cloud-based systems. Accurately estimating and managing migration costs is essential.
  • Data Transfer and Bandwidth Limitations: Transferring large volumes of data to the cloud can be time-consuming, especially if the organization's bandwidth is limited. This challenge can result in extended migration periods and potential disruptions to ongoing business operations.
  • Integration and Compatibility Issues: Applications and systems designed for on-premise environments might not seamlessly integrate with cloud services. Compatibility issues could arise, requiring modifications or refactoring of applications to ensure compatibility with cloud platforms.
  • Skills and Training Requirements: Transitioning to the cloud often requires a different skill set compared to managing on-premise systems. Organizations might face challenges in finding skilled personnel or training existing employees to effectively manage and optimize cloud resources.
  • Vendor Lock-in and Interoperability: Depending heavily on a single cloud provider can lead to vendor lock-in, making it challenging to migrate to another platform in the future. Ensuring interoperability between different cloud services or maintaining multi-cloud strategies can mitigate this risk.
  • Regulatory Compliance and Governance: Organizations need to ensure that their cloud migration strategy complies with regulatory standards specific to their industry. This includes understanding data sovereignty, privacy laws, and compliance requirements in different regions.
  • Performance and Latency Concerns: Cloud services might introduce latency issues, especially if the organization requires real-time processing or has high-performance computing needs. Optimizing performance in the cloud environment while minimizing latency can be a challenge.

Methods for On-Premise to Cloud Migration:

There are several methods for migrating from an on-premise infrastructure to the cloud, each with its own advantages, considerations, and suitable use cases. Here's a detailed overview of these methods:


    Rehosting (Lift and Shift):

  • Description: Rehosting involves moving applications and workloads from on-premise servers to the cloud without making significant changes to their architecture. It essentially replicates the existing infrastructure in the cloud environment.
  • Advantages: Quick and relatively simple migration process. Minimal changes required, leading to shorter migration timelines.
  • Considerations: May not fully leverage the benefits of cloud-native services. Performance optimization might be needed post-migration.

    Replatforming (Lift, Tinker, and Shift):

  • Description: Replatforming involves making minor adjustments to applications or systems before migrating them to the cloud. This could involve upgrading databases, adjusting configurations, or optimizing applications for cloud environments.
  • Advantages: Balances migration speed with some level of optimization for cloud infrastructure. Can improve performance and reduce costs compared to rehosting.
  • Considerations: Requires more planning and potentially additional resources compared to rehosting. May involve downtime during the migration process.

    Repurchasing (Drop and Shop):

  • Description: In this method, organizations replace existing on-premise software or systems with cloud-based Software-as-a-Service (SaaS) solutions available from cloud providers or third-party vendors.
  • Advantages: Simplifies management and reduces the need for in-house maintenance. Often results in access to more advanced features and frequent updates.
  • Considerations: Might require customization or integration efforts to fit the specific needs of the organization. Migration of data and user training may also be necessary.

    Refactoring (Re-architecting or Rearchitecting):

  • Description: Refactoring involves redesigning or rewriting applications to optimize them for the cloud-native environment. This method can involve breaking down monolithic applications into microservices or utilizing cloud-specific services.
  • Advantages: Enables leveraging the full benefits of cloud-native features, leading to improved performance, scalability, and cost-efficiency.
  • Considerations: Requires significant time, resources, and expertise for application redesign and development. Potential disruptions to ongoing operations during the migration process.

    Retiring (Sunsetting or Decommissioning):

  • Description: This method involves identifying and retiring applications or services that are no longer necessary or viable for migration to the cloud. It focuses on reducing the complexity of the migration process by eliminating outdated or redundant systems
  • Advantages: Streamlines migration efforts by reducing the number of systems that need to be migrated. Helps in simplifying the cloud environment.
  • Considerations: Requires careful assessment to ensure that critical functionalities are not eliminated inadvertently. May involve data archival or transfer to alternative systems.

    Retaining (Maintaining On-Premise):

  • Description: In some cases, organizations may choose to retain certain systems or applications on-premise due to regulatory, security, or performance reasons.
  • Advantages: Ensures control over sensitive data or critical systems that might not be suitable for migration to the cloud.
  • Considerations: Can lead to a hybrid environment, which requires integration between on-premise and cloud systems. This might introduce complexities in management and maintenance.

Selecting the appropriate migration method depends on factors like the nature of applications, business objectives, timelines, budget constraints, and the level of optimization desired for the cloud environment. Often, a combination of these methods might be employed to achieve an efficient and effective migration strategy.

Cloud Migration Tools:

Cloud migration tools are instrumental in facilitating the transfer of data, applications, and infrastructure from on-premise environments to the cloud. These tools offer a range of functionalities to streamline and automate various aspects of the migration process. Here's an overview of some prominent cloud migration tools and their functionalities:


    AWS Server Migration Service (SMS):

  • Platform: Amazon Web Services (AWS)
  • Functionality: Enables automated migration of on-premise VMware virtual machines to AWS. It allows incremental replication of VMs and provides options for scheduling and tracking the progress of migrations.

    Azure Migrate:

  • Platform: Microsoft Azure
  • Functionality: A central hub for assessing on-premise environments and planning Azure migrations. It provides discovery and assessment of on-premise servers, offers migration suitability analysis, and provides cost estimations for Azure services.

    Google Cloud Migrate for Compute Engine:

  • Platform: Google Cloud Platform (GCP)
  • Functionality: Allows for automated migration of virtual machines from on-premise environments or other cloud providers to Google Compute Engine. It supports various operating systems and provides pre-migration testing capabilities.

    CloudEndure Migration:

  • Platform: Multi-cloud (AWS, Azure, GCP)
  • Functionality: Supports live migration of physical, virtual, and cloud-based servers to the cloud. It offers continuous replication, near-zero downtime cutover, and supports a wide range of source environments.

    Carbonite Migrate:

  • Platform: Multi-cloud
  • Functionality: Facilitates migrations across different cloud environments (AWS, Azure, GCP) as well as on-premise. It supports both physical and virtual migrations, provides live replication, and offers features for workload testing before cutover.

    RiverMeadow Cloud Migration Platform:

  • Platform: Multi-cloud
  • Functionality: Automates the migration of on-premise workloads to various cloud environments. It supports application-level migration and offers features for discovery, assessment, and migration without requiring modifications to the source environment.


  • Platform: Multi-cloud
  • Functionality: Focuses on data migration between different cloud storage services. It supports migration of files, documents, and other data types across various cloud storage providers, simplifying data transfer and synchronization.

    Tricore Solutions:

  • Platform: Multi-cloud
  • Functionality: Provides comprehensive migration services covering assessment, planning, and execution of migrations to cloud platforms. Offers expertise in managing complex migrations involving diverse applications and systems.

These tools vary in terms of supported platforms, migration capabilities, level of automation, and specialized features. Choosing the right tool often depends on factors such as the specific cloud provider, types of workloads, complexity of the migration, and the organization's preferences regarding features and functionalities required for a successful migration journey.


On-premise to cloud migration marks a transformative step for businesses seeking scalability, cost-efficiency, and innovation. Sigmoid's cloud transformation services enable organizations to navigate the complexities of migration, harnessing the power of the cloud to drive growth and competitive advantage.


The duration of migration varies based on the complexity, size of data, applications, and chosen migration method. It can range from several weeks to months for a comprehensive migration.

Cloud service providers adhere to stringent security measures and compliance standards, often providing more robust security protocols compared to on-premise infrastructure. However, ensuring proper configuration and management is crucial for data security in the cloud.

Sigmoid employs a systematic approach involving assessment, planning, execution, and post-migration support. Our expertise lies in leveraging cloud-native tools and methodologies to ensure a smooth and efficient migration process.

To tackle on-premises to cloud migration challenges, organizations should commence with a meticulous assessment of existing infrastructure, focusing on data classification and prioritization. Implementing a phased migration approach, with non-critical workloads first, allows for risk mitigation and adaptation. Thorough testing of application compatibility, coupled with employee training and change management initiatives, ensures a seamless transition. Security measures, including robust encryption and collaboration with cloud service providers, should be prioritized to safeguard sensitive data.