Enterprise cloud software development · EonTech Poland

Enterprise software development in cloud,
with zero downtime.

EonTech is a Poland-based nearshore engineering partner for enterprise cloud software development and cloud migration on AWS, Azure, and GCP. We assess what you run, choose the right move for each workload, and cut over without taking you offline. The run rate is modelled before you commit, and the whole estate lands in your accounts as code you own.

Plan your migration Explore services
  • Zero-downtime cutover
  • Cost modelled up front
  • Infrastructure as code · your accounts
No downtime
Replicate, run parallel, and keep a tested rollback path
Cost first
Projected run rate before you commit, tuned after cutover
Your IP
Estate delivered as code in accounts you control

Why this page exists

A working brief for enterprise cloud software development

Two things usually go wrong with enterprise cloud programmes. The first is a "big-bang" migration that treats cloud as a data-centre replacement — everything lifts, nothing modernises, and the first month's bill shows why. The second is a well-designed re-architecture that never ships because it tries to change everything at once. Both fail for the same underlying reason: the migration and the ongoing enterprise software development in cloud are treated as separate projects instead of one continuous engineering practice.

EonTech is a Poland-based full-cycle engineering agency — custom software development, web and mobile, cloud and DevOps, QA, and custom AI/ML model development, all under one team. Our cloud practice treats enterprise cloud software development as a single arc: assess, land, migrate wave by wave, modernise where the upside is real, then keep shipping new services on the estate we helped you land. Same engineers, same repositories, same infrastructure as code.

The rest of this page is a practical brief for CTOs, platform leads, and enterprise IT owners weighing an EU nearshore partner against a big-consultancy engagement or an offshore body-shop. Everything below is drawn from real delivery — no fabricated case studies, no stock statistics.

Key benefits

Six reasons EU enterprises pick a nearshore cloud partner

The commercial case for choosing a Poland-based partner for enterprise software development in cloud — the ones we hear most often on procurement calls.

  • Zero-downtime cutover by design

    Replicate continuously, run old and new in parallel, rehearse the switch, keep a tested rollback path. Enterprise cloud software development stops being a held breath and becomes a controlled event.

  • Run rate modelled up front

    You see the projected cloud bill before you commit — right-sizing, autoscaling, and reserved capacity built into the design. No first-month bill shock.

  • Senior EU nearshore delivery

    Poland-based cloud and platform engineers with full-day overlap for the UK, EU, and Nordics. GDPR-native, DPAs and SCCs ready to sign, no third-country transfer gymnastics.

  • Infrastructure as code, in your accounts

    Every resource lives in your AWS, Azure, or GCP tenant, defined in Terraform or Pulumi. Enterprise software development in cloud that you can audit, extend, and run without us.

  • One partner across the whole cycle

    Migration, custom software development, DevOps, QA, and custom AI/ML all sit inside the same team. Fewer contracts, fewer seams, one accountable partner.

  • Modernise while you migrate

    We do not lift and shift technical debt into the cloud. Legacy monoliths get decomposed into managed services where the upside pays back — legacy modernisation and cloud migration in one motion.

Assess before you move

A migration is won or lost before the first workload moves

We map what you run and how it connects, sequence the move into waves that reduce risk, and model the cloud run rate so there is no bill shock. Big-bang migrations fail; planned ones don't.

The assessment is honest about what should not move at all. Some workloads are cheaper to retire or consolidate than to lift — and we will tell you which.

See our cloud & DevOps practice

The right move per workload

Not everything wants the same migration

One estate rarely takes one strategy. We pick re-host, re-platform, re-architect, or retire workload by workload — based on the value at stake, not a one-size template.

  • Re-host (lift & shift)

    Move a workload as-is when speed matters and the architecture is sound. The fastest exit from a data centre, with optimisation to follow.

  • Re-platform

    Lift, then make the changes that pay for themselves — managed databases, container runtimes, autoscaling — without rewriting the application.

  • Re-architect

    Reshape the workload for the cloud where the upside is real: decompose a monolith, adopt managed services, design for elasticity and resilience. The core of enterprise cloud software development done right.

  • Retire & consolidate

    The cheapest migration is the one you don't do. We find the workloads to switch off or merge, so you carry less into the cloud, not more.

The cutover

Engineered to switch without anyone noticing

The moment traffic moves is the riskiest in any migration. We rehearse it, validate parity, and keep a tested rollback ready — so the switch is a controlled event, not a held breath.

  1. 01

    Discovery & landing zone

    We map the estate and stand up a compliant landing zone in AWS, Azure, or GCP — networking, identity, guardrails, and account hierarchy — before any workload moves.

  2. 02

    Replicate and validate

    We stand up the target environment and replicate data continuously, validating parity against production before any traffic shifts.

  3. 03

    Run in parallel

    Old and new run side by side. We rehearse the cutover, test rollback, and prove the new environment under real load before the switch.

  4. 04

    Cut over in a window

    Traffic moves in a controlled, often staged switch with a tested rollback path. Designed for zero downtime, with a safe exit if anything looks wrong.

  5. 05

    Optimise, harden, hand over

    Once stable, we tune cost, right-size resources, add observability, document runbooks — so the new platform stays cheap, well-run, and yours to operate.

FinOps & cost control

The cloud should cut your bill, not inflate it

Migrations that ignore cost end up more expensive than the data centre they left. We design for the run rate from the start. Modernising old workloads pairs naturally with legacy modernization.

  • A projected run rate before migration, not a surprise on the first bill
  • Right-sized resources and autoscaling instead of always-on overprovisioning
  • Reserved and committed-use planning where workloads are predictable
  • Tagging and cost visibility so spend maps to teams and services
  • FinOps guardrails — budget alerts, anomaly detection, and monthly review
  • Retired and consolidated workloads removed before they incur cloud cost
  • Infrastructure as code, so the whole estate is yours to run and audit

Industry relevance

Where our enterprise cloud practice already lands

Regulated verticals demand cloud programmes that clear procurement, audit, and go-live at the same time. These are the buyer shapes our senior engineers already speak.

  • Financial services

    Regulated banks, PSPs, and insurers moving core systems to public cloud under PSD2, DORA, and national supervisory expectations. Audit-first cutovers, no shortcuts.

  • Healthcare & life sciences

    HIPAA and GDPR-native migrations for hospital IT, digital-health platforms, and pharma data pipelines. Encryption, PHI isolation, and evidence trails built in.

  • Retail & e-commerce

    Peak-ready migrations that scale on Black Friday instead of tipping over. Data-plane cutovers around checkout and inventory synchronisation done live.

  • Logistics & supply chain

    TMS, WMS, and telemetry pipelines migrated to managed services without breaking real-time visibility for warehouses and drivers.

  • SaaS & enterprise IT

    Multi-tenant SaaS re-platforming and internal-IT modernisation — the everyday shape of enterprise software development in cloud for our EU customer base.

  • Public sector & govtech

    National, regional, and agency clouds with data-residency constraints. We run migrations under GDPR and country-specific sovereignty requirements.

Trust & compliance

The signals procurement checks for

The paperwork is not the exciting part, but it is what separates a calm cloud programme from an audit-flagged one. Our enterprise cloud software development is built around the standards EU and UK buyers actually enforce.

GDPR-native by default, DPAs and SCCs ready to sign, ISO 27001 posture across delivery, and sector-specific alignment where the vertical requires it — financial services under PSD2 and DORA, healthcare under HIPAA and MDR-adjacent controls.

Why EonTech

A migration partner you can let off the leash

  • Zero-downtime by design

    Replicate, run parallel, rehearse, and keep a tested rollback path — the cutover is engineered, not crossed-fingers.

  • Cost under control

    We model the run rate up front and tune after, so the cloud saves money instead of quietly draining it.

  • Senior only

    Cloud and platform engineers who have done cutovers before — the people who plan it are the ones at the console.

  • You own the estate

    Everything as infrastructure as code, in your accounts, under your control — no lock-in to us or a managed wrapper.

Common questions

What enterprise buyers ask before an EU cloud programme

  • Can you migrate without taking us offline?

    That is the default goal. We replicate data continuously, run the old and new environments in parallel, rehearse the cutover, and keep a tested rollback path. Most workloads move in a controlled window with no customer-visible downtime; where a brief window is unavoidable, you know about it well in advance.

  • How do you stop the cloud bill from exploding?

    We model the projected run rate before migration and design for it — right-sizing, autoscaling, committed-use planning, and retiring workloads you no longer need. After cutover we add cost visibility and tagging so spend stays mapped to teams and tuned over time.

  • Will we be locked into your team afterwards?

    No. The whole estate is delivered as infrastructure as code in your own cloud accounts, with runbooks and documentation handed over. You can run it, audit it, and extend it yourself or with anyone — the platform and the code are yours.

  • Do you cover enterprise software development in cloud, not just migration?

    Yes. Around half of these engagements evolve past the migration itself into ongoing enterprise software development in cloud — new services, product features, data pipelines, and AI workloads built on the modernised estate. Same team, same repos, same IaC.

  • What does an enterprise cloud software development engagement usually look like?

    A typical enterprise cloud software development engagement starts with a two-to-four-week discovery and landing-zone stand-up, followed by a first migration wave with a fixed milestone, then a rolling delivery cadence. Contracts are monthly rolling, no multi-year lock-in.

  • Which cloud do you work in — AWS, Azure, or GCP?

    All three. Our senior cloud engineers are certified across AWS, Azure, and GCP; the pattern library (landing zones, IAM, networking, observability, cost) travels between them. If you already have a preferred cloud, we build there; if you are choosing, we help you compare on the criteria that actually matter.

  • Do you handle multi-cloud or hybrid setups?

    Yes. Enterprise buyers often have hybrid estates — public cloud plus on-prem, or a primary cloud plus disaster-recovery in another. We design the connectivity, identity federation, and data-replication patterns that keep those work in production, not just in a diagram.

  • How do you handle regulated data — GDPR, healthcare, financial services?

    Compliance scope is part of the assessment. As an EU-based partner we operate under GDPR by default; for regulated verticals we align to HIPAA, PSD2, DORA, or the relevant national supervisory framework. Data residency, encryption, key management, and audit trails are designed in, not bolted on.

  • Can you re-architect a legacy monolith while migrating it?

    Yes, workload by workload. Some monoliths lift-and-shift then get decomposed post-migration; some need the decomposition first to be safe to move. We pick the sequence based on the value at stake, not a template. This is where cloud migration meets modernisation.

  • What team shapes do you offer?

    Full-project outsourcing (we run the migration and follow-on enterprise cloud software development), dedicated cloud pods (a self-directed squad that owns the platform), or staff augmentation where our senior engineers plug into your team. Monthly rolling terms throughout.

  • How long does a realistic enterprise migration take?

    A first-wave workload usually reaches production in 8–14 weeks including landing-zone stand-up. A large enterprise estate is measured in quarters, not months — but we structure it as a series of small, shippable waves so value lands early and course-corrections are cheap.

  • Do you support post-migration FinOps and platform engineering?

    Yes. After cutover we can run cost visibility, monthly FinOps review, incident response, and platform engineering — either as a managed engagement or by embedding into your platform team. Both are common with clients continuing enterprise software development in cloud with us.

Related practices

Nearby capabilities at EonTech

Migrate once, and keep building on it

Tell us what you run today and where you want to be. We will assess the estate, model the run rate, and scope a sequenced, zero-downtime migration — with the same team ready to continue as your enterprise cloud software development partner afterwards.

Plan your migration See cloud & DevOps