Cloud Modernisation

Modernise. Decompose. Migrate to Azure with confidence.

We design secure, resilient and cost-effective migration paths for enterprise software — from monolith breakdown and legacy modernisation to cloud native replatforming, data migration and automated DevOps. Our senior engineers partner with your leadership to reduce risk, accelerate value and unlock future capability.

Risk-led Assessments Azure Migration Monolith Breakup Legacy Modernisation DevOps & CI/CD Cloud-Native Architecture Zero Downtime Microservices Containerisation
Executive Summary

Fast facts for senior stakeholders — what we deliver and how we measure success.

90%
Faster deploy cycles
40%
Cost reduction (estimated)
3–6m
Typical MVP migration
PROVEN TRACK RECORD

Built on Experience, Delivered with Confidence

Our modernisation approach is backed by real-world results from enterprises who've successfully transformed their legacy systems.

25+ Years .NET Expertise
50+ Legacy Systems Modernised
100% Migration Success Rate
Zero Downtime Migrations
OUR METHODOLOGY

Strategic Modernisation Framework

Assemblysoft combines strategic assessment, pragmatic engineering and automated delivery to migrate and modernise systems while preserving business continuity. We focus on minimum viable change with maximum business outcome.

Discovery & Assessment

Risk-led discovery, dependency mapping, cost modelling and migration roadmapping. We analyse your technical debt, integration points, and business-critical workflows.

Deliverables: Executive report, TCO analysis, migration plan

Decompose Monoliths

Identify bounded contexts, create domain-aligned services and build incremental strangler patterns to safely extract functionality without disrupting operations.

Pattern: Strangler Fig, Domain-Driven Design

Cloud Native Replatform

Containerisation, serverless for burst workloads, managed platform adoption (AKS, App Service, Functions) and secure networking with Azure best practices.

Platforms: Azure Kubernetes, App Service, Functions

Data & Integration

We migrate data with minimal downtime using staged strategies, change data capture and resilient ETL. Integrations are refactored to cloud-first patterns and secured with modern identity and API management.

Azure SQL Cosmos DB Event Hub Service Bus

DevOps & Release Engineering

Automated pipelines, shift-left testing, infrastructure as code and progressive delivery (blue-green, canary) to make releases safe, repeatable and auditable.

GitHub Actions Azure DevOps Bicep/Terraform Container Registry
COMMON SCENARIOS

We've Been There. We Know the Challenges.

Based on our experience modernizing .NET legacy systems for enterprises, here are the most common scenarios we help solve.

Legacy .NET Framework
ASP.NET WebForms to .NET Core Migration
The Challenge

ViewState bloat, server controls, tightly coupled UI logic, no cross-platform support

Our Solution
  • Incremental migration using reverse proxy routing
  • Razor Pages or Blazor for modern UI patterns
  • API extraction for business logic reuse
Monolith Breakdown
E-Commerce Platform Decomposition
The Challenge

Single deployment unit, database coupling, team bottlenecks, scaling limitations

Our Solution
  • Domain-driven design to identify bounded contexts
  • Extract catalog, cart, checkout as microservices
  • Event-driven communication with Azure Service Bus
Database Modernisation
SQL Server to Azure SQL & Cosmos DB
The Challenge

On-premises licensing costs, manual backups, global latency, limited scalability

Our Solution
  • Hybrid approach: transactional data to Azure SQL
  • Document/catalog data to Cosmos DB for global scale
  • Zero-downtime migration with read replicas
WCF Modernisation
WCF Services to REST APIs & gRPC
The Challenge

SOAP complexity, Windows-only hosting, poor mobile support, no cloud-native patterns

Our Solution
  • REST APIs with ASP.NET Core Web API
  • gRPC for internal service-to-service communication
  • API Management for versioning and security
Authentication Overhaul
Forms Auth to Azure AD B2C & Entra ID
The Challenge

Custom auth tables, password management risk, no SSO, limited MFA

Our Solution
  • Azure AD B2C for customer identity
  • Microsoft Entra ID for enterprise SSO
  • OAuth2 & OpenID Connect implementation
CI/CD Transformation
Manual Deploys to Automated Pipelines
The Challenge

FTP deployments, manual testing, no rollback strategy, deployment anxiety

Our Solution
  • GitHub Actions or Azure DevOps pipelines
  • Blue-green deployments for zero downtime
  • Automated testing (unit, integration, load)
PROVEN PROCESS

How We Execute Modernisation

Our phased approach ensures business continuity while progressively transforming your systems.

1
2-4 weeks
Assessment & Strategy

Deep-dive technical audit, stakeholder interviews, cost-benefit analysis. We create a detailed migration roadmap with risk mitigation strategies and business case.

Architecture Review Dependency Mapping TCO Analysis
2
2-3 weeks
Foundation & Setup

Azure landing zones, network architecture, identity integration, DevOps pipelines, monitoring infrastructure. Everything needed for secure, compliant cloud operations.

Azure Setup CI/CD Pipelines Security Baseline
3
4-6 weeks
Pilot Migration

Start with a non-critical service or feature. Validate approach, refine processes, train teams and demonstrate quick wins to build organizational confidence.

Proof of Concept Team Training Process Validation
4
3-6 months
Progressive Migration

Phased migration of services using strangler fig pattern. Each phase is fully tested, monitored and validated before moving to the next. Business continues uninterrupted.

Incremental Deployment Feature Flags Canary Releases
5
Ongoing
Optimization & Handover

Cost optimization, performance tuning, security hardening and knowledge transfer. We ensure your team can operate and evolve the modernized platform independently.

Cost Optimization Knowledge Transfer Documentation
TECHNOLOGY EXPERTISE

Technologies & Services We Master

We leverage Microsoft's ecosystem and cloud-native technologies to deliver secure, scalable modernisation solutions.

AI & Software Development

Cloud-native APIs, microservices and intelligent automation.

Custom Software Development

Refactoring, replatforming and pragmatic redesign for cloud readiness.

Services Home

Explore our full set of cloud modernisation services and pillars of delivery.

Core Technologies

.NET Core / .NET 8+ ASP.NET Core Entity Framework Core Azure Functions Azure Kubernetes Service Azure App Service Azure SQL Database Cosmos DB Redis Cache Service Bus Event Grid API Management Application Insights Azure DevOps GitHub Actions Docker Bicep Terraform
Migration Checklist
  • ✅ Application & infrastructure discovery
  • ✅ Roadmap & TCO modeling
  • ✅ Automated pipelines & migration
  • ✅ Observability & optimization
Request Assessment
MICROSOFT PARTNERSHIP

Aligned with Microsoft Best Practices

Assemblysoft aligns our cloud modernisation approach with Microsoft guidance and tooling to reduce migration risk and accelerate business value. We leverage Azure platform services, Azure Migrate, Azure Well-Architected principles, GitHub and Azure DevOps for secure, repeatable delivery.

  • Azure Migrate: Discovery, app & infra assessment and lift-and-shift planning with automated dependency mapping.
  • Well-Architected Framework: Operational excellence, security, reliability, performance and cost optimisation built into every design.
  • GitHub & Azure DevOps: Enterprise-grade pipelines, CI/CD automation and progressive delivery for safe, auditable deployments.
  • Microsoft Aspire: Cloud-ready app development stack with built-in observability, service discovery and deployment orchestration.

This alignment means your migration uses proven Microsoft patterns and toolchains trusted by Fortune 500 companies, backed by observable metrics and continuous improvement.

Request Azure Briefing

Schedule a 30-minute consultation with our Azure architects

Ready to Modernize Your Legacy Systems?

Let's discuss your migration challenges and create a risk-free roadmap to Azure. Our senior architects are ready to help you unlock the full potential of cloud-native architecture.

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⚡ Free initial assessment • 🔒 NDA-protected discussions • 📊 No-obligation proposal

Start a meaningful conversation with us today.

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