Modernize Legacy
Without Breaking the Business.

Move beyond risky “big bang” migrations. We deliver incremental legacy modernization with secure cloud landing zones, DevSecOps automation, and monitoring-first operations, so Day 2 is stable, not chaotic.

Discuss Your Project

Discovery & Audit

Cloud Landing Zone

DevSecOps safeguards

Modernization Trusted for Regulated & important Systems

35%
Lower Operating Costs

Rationalize infra + automate releases.

4-8w
Migration Wave

Iterative moves, no big bang.

100%
Policy as Code

safeguards baked into pipelines.

$0.
Platform Lock-In

Portable patterns + open tooling.

Beyond the Lift-and-Shift.
Modernize for Day 2.

Most migrations fail after go-live due to missing landing zones, weak security controls, and no monitoring. We modernize with a stable platform foundation, so operations don’t collapse.

The Legacy Migration Failure Pattern

What most “move teams” deliver:

  • No Landing Zone

    Identity, network, logging, and safeguards are bolted on too late.

  • Fragile Cutovers

    No rehearsal, no rollback plan, and high downtime risk.

  • Zero Ongoing Ops

    No SLOs, no dashboards, no runbooks, only tickets.

The Coretus Modernization Standard

Safe Cloud Migration:

  • Landing Zone + Identity First

    Network segmentation, IAM, logging, and baseline policies before workloads move.

  • Modern Cutover Engineering

    Wave planning, rehearsals, rollback, and validation gates to minimize risk.

  • DevSecOps + Monitoring

    Pipelines, scanners, SLO dashboards, and runbooks for stable ongoing support.

Stable Platforms. Predictable Operations.

Modernization Capabilities.

Move from Legacy Constraints to Cloud Speed + Control.

Discovery + Rationalization

Application inventory, dependency mapping, risk scoring, and modernization pathways per workload.

  • App Portfolio Map
  • Wave Planning

Landing Zone Engineering

Identity, networking, logging, and policy baselines for secure, ready to grow cloud foundations.

  • IAM + Network Segmentation
  • Centralized Logging

Migration + Cutover

Rehost, replatform, or refactor with rehearsals, rollback, and validation gates.

  • Blue/Green Cutovers
  • Rollback Playbooks

DevSecOps Automation

CI/CD pipelines, scanners, automated safeguards, and reproducible infrastructure via IaC.

  • IaC + Pipelines
  • Security Gates

Data Modernization

Database migration, replication, performance tuning, and modernization for cloud primitives.

  • Replication Strategy
  • Performance Tuning

Monitoring + SRE

Dashboards, tracing, SLOs, and runbooks so ongoing support stay stable and measurable.

  • SLO Dashboards
  • Runbooks + Alerts
Modernization Stack

A Secure Path from
Legacy to Cloud.

Discovery + Dependency Map

Modernization Plan

Application portfolio rationalization, risk scoring, and wave planning tied to business criticality.

Dependency Graph
Wave Sequencing
Risk + RTO/RPO
Inventory Plan Waves

Landing Zone + Network

Foundation First

Identity, segmentation, logging, and baseline controls so workloads land on solid ground.

IAM Baselines
Network Segmentation
Central Logging
private cloud/VNet IAM Logs

Cutover + Validation

Risk Control

Rehearsed cutovers with rollback plans and validation gates so production moves safely.

Rehearsal Runs
Rollback Strategy
Acceptance Gates
Cutover Tests Rollback

Monitoring + SRE

Day 2 Ready

SLO dashboards, tracing, alerts, and runbooks so the cloud platform stays measurable and stable.

SLO Dashboards
Tracing + Logs
Runbooks + Alerts
Metrics Tracing SLOs
Modernization Foundation

Modernize Faster.
Avoid Migration Chaos.

We deploy the Coretus Migration Module™, a secure, ready-made foundation for landing zones, CI/CD, security gates, and monitoring.

Your teams focus on Proof in Practice and platform reliability, not rebuilding foundations.

6-10 Wk

Time-to-Platform Saved

30-50%

Release Cycle Faster

Built for Clear Activity Records, policy enforcement, and ongoing support.
Cutover-Ready

Your Legacy Reality

Dependencies • Risk • Downtime • Compliance

Coretus Migration Module v2.4

Discovery

  • • Map
  • • Risk

Landing Zone

  • • IAM
  • • Net

Cutover

  • • Rehearse
  • • Rollback

SRE Ops

  • • SLO
  • • Runbooks
Pre-Configured Modernization Pods

Deploy Migration-Ready Delivery Squads.

Integrated units specialized in legacy analysis, cloud foundations, and DevSecOps operations, so you modernize safely, not repeatedly firefight.

Modernization Architect

Builds the improvement plan: dependencies, wave sequencing, data flows, and cutover strategy.

Portfolio Waves Cutover

DevSecOps Lead

Embeds automated safeguards, scanners, and deployment safeguards across environments.

Pipelines Policy Gates
99.9%
Availability Target
Cutover Rehearsals Included

Squads arrive with landing zone patterns, rollout playbooks, and monitoring hooks, built-in from day one.

Cloud Platform Engineer

Builds landing zones, networks, IAM baselines, and reproducible infrastructure.

Landing Zone IaC Network

SRE / Monitoring Lead

SLO dashboards, tracing, alerts, and runbooks to keep ongoing support stable.

SLOs Tracing Runbooks
Sound Technical Foundation

The Modernization Blueprint.

improvements are a system: assess, foundation, migrate, secure, and operate, built for stability and compliance.

01. Discovery

Inventory, dependencies, risk, and wave sequencing to de-risk the improvement.

Focus:
Portfolio • Dependency Map • RTO/RPO

02. Foundation

Landing zones, networking, identity, and logging to enforce stable baselines.

Focus:
IAM • Network • Central Logs

03. Migration Waves

Cutover engineering with validation, rehearsals, and rollbacks for safe moves.

Focus:
Rehearsals • Blue/Green • Rollback
Wave-Based

04. Operate + Improve

Monitoring, SLOs, runbooks, and security gates for predictable operations.

Focus:
SLOs • Tracing • Runbooks
Secure by Design
Landing Zones
Observable Ops
Delivery Framework

The Road to Safe Modernization.

A phased model that reduces downtime risk: discovery, foundation, migration waves, then Day 2 ops.

Phase 01

Discovery + Risk Model

Portfolio mapping, dependencies, RTO/RPO, and modernization pathway per workload.

Output: Modernization Plan
Phase 02

Landing Zone + Baselines

Identity, networking, logging, and policy baselines so workloads land safely.

Output: Cloud Foundation Ready
Phase 03

Migration Waves + Cutovers

Wave execution with rehearsals, validation gates, and rollback plans.

Output: Safe Production Moves
Phase 04

Operate + Optimize

SLO dashboards, alerts, runbooks, and continuous security controls for Day 2 stability.

Output: Measurable Cloud Ops
Performance Validation

Proven Modernization Outcomes.

Cloud Case Archives
48%
Release Faster

Legacy App Modernized
with DevSecOps

Manual releases caused downtime risk and drift across environments.

Delivered a landing zone + CI/CD with policy gates + baseline system visibility.

"We finally had predictable releases, safeguards made it safe, and dashboards made it operable."

PE
Platform Engineering
Business Team
32%
Cost Reduced

Migration Waves for
Legacy Infrastructure

Legacy infra growth created cost spikes and scaling bottlenecks.

Shipped wave-based migration with rehearsed cutovers and Day 2 monitoring.

"Cutovers stopped being scary, rehearsals + rollback made it controlled and repeatable."

IT
Infrastructure Lead
Ops Organization
Delivery Models

Modernization Partnership Models.

Choose an engagement aligned with speed, risk tolerance, and platform ownership.

Trust & Controls

Governed
Cloud Operations.

Modernization must balance speed with risk control. We embed policy enforcement, clear audit records, and observable pipelines, so production stays trustworthy.

Validation Gates + Rollback

Rehearsals, acceptance checks, and rollback playbooks for controlled cutovers.

Policy as Code

safeguards in pipelines: security scans, compliance checks, and drift prevention.

Activity Records & Monitoring

Logs, traces, and dashboards mapped to SLOs, so Day 2 is measurable.

Audit Logs

Traceable Changes

Policy

safeguards

SLOs

Reliability

Cutovers

Rollback Ready

Modernization FAQs

Frequently Asked
Migration Specs.

Service Identity
Move Legacy Systems to the Cloud

Can you avoid big-bang cutovers?

Yes. We use wave-based modernization and rehearsed cutovers with rollback to reduce downtime risk.

Landing zone included?

Yes. Identity, networking, logging, and baseline policies are built first so workloads land safely.

Security & compliance checks?

We embed automated safeguards, scanners, and activity records into pipelines and platform baselines.

Rehost vs refactor guidance?

We recommend per workload: rehost, replatform, refactor, or rebuild, based on risk and ROI.

Is ongoing support covered?

SLO dashboards, alerts, tracing, and runbooks are included so the platform stays operable.

Modernization Feasibility?

We can deliver a 48-hour assessment: dependencies, risk scoring, and a wave plan for your top workloads.

Request Migration Briefing

Modernize Your Legacy Core.

Move older applications and infrastructure to the cloud without interrupting important business operations. We improve security, monitoring, performance, and release automation along the way.

Zero-Downtime Cutovers

DevSecOps Built-In

Architecture + ownership