Partnership that powers possibilities Let’s Build Together

LogoTechstern
Get A Quote

Migrating E-Commerce Infrastructure to Microsoft Azure

Project Goals

  • Reduce operational overhead
  • Enable high availability and business continuity
  • Improve performance, security, and scalability
  • Lay the foundation for a serverless, cloud-native architecture
  • Introduce modern governance and automation practices

Project description

Migrating E-Commerce Infrastructure to Microsoft Azure

We helped an e-commerce client migrate their entire on-premises infrastructure (52 VMs) to Microsoft Azure using a phased IaaS-to-PaaS strategy. The goal was to improve high availability, disaster recovery, scalability, and reduce operational costs. The solution included Azure Web Apps, PaaS SQL, Azure Traffic Manager, and enterprise-grade security—resulting in a modern, resilient, and cost-efficient cloud environment.

Business Challenges

The client operated 52 on-premises virtual machines hosting web servers, application servers, and SQL clusters. As demand grew and remote operations became essential, the legacy setup posed several issues:

  • High maintenance and hardware costs
  • No built-in redundancy—application servers had single points of failure
  • Limited disaster recovery, relying on manual backups
  • Inflexibility to scale or integrate modern cloud tools
  • Poor support for remote access post-COVID

Risks & Mitigation Strategies

Risk: Service Disruption

Mitigation: Used an incremental migration approach with both on-premises and cloud environments running in parallel to avoid downtime.

Risk: Cost Overruns

Mitigation: Established defined cost models and continuously monitored Azure usage to control expenses.

Risk: SLA Failures

Mitigation: Leveraged Azure-native services that offer high availability (99.95%+), ensuring minimal disruptions.

Risk: Organizational Inefficiency

Mitigation: Ensured readiness through unified support plans, detailed documentation, and training for the client’s IT team.

Modules

Solution Approach

Following Microsoft’s Cloud Adoption Framework, we designed a phased migration strategy:

01

Phase I – Infrastructure as a Service (IaaS)

  • Migrated key workloads (web, app, SQL) to Azure VMs
  • Implemented active-active SQL clusters for continuous data flow
  • Used Azure Traffic Manager for geo-distributed routing
  • Strengthened network security with NSGs and standardized resources

02

Phase II – Platform as a Service (PaaS):

  • Transitioned to Azure Web Apps and Azure SQL PaaS
  • Eliminated OS-level patching and improved scalability
  • Redesigned Dev, QA, and Production environments using Azure-native services

We Used

Architecture Highlights

Techstern

Working experience

  • High Availability via multi-region deployments and active-active setups
  • Operational Efficiency through automation and centralized monitoring
  • Cost Optimization by reducing hardware and licensing overhead
  • Resilience & Governance through strong security baselines and disaster recovery

  • App Services – SLA commitment of 99.95% uptime
  • Azure SQL – SLA commitment of 99.99% uptime
  • Vault – SLA commitment of 99.9% uptimev
  • Traffic Manager – SLA commitment of 99.99% uptime
  • Azure Compute & Storage – SLA commitment of 99.99% uptime
  • Overall Average SLA – Exceeds 99.8% across critical services

The client now benefits from a modern cloud infrastructure that is:

  • Scalable to meet growing business needs
  • Resilient with built-in DR and failover
  • Secure with enterprise-grade cloud tools Flexible to integrate with future SaaS or third-party services

This successful migration demonstrates how a structured, phased approach can move legacy e-commerce systems to the cloud—without disruption, and with long-term gains in cost savings, performance, and agility.