M&A Technical Integration Due Diligence Pre-deal · Day 1 · Post-merger

M&A technical integration
that protects the deal
and delivers the value.

From pre-acquisition technical due diligence through Day 1 readiness to full post-merger integration — we de-risk the technology workstream so the deal delivers what the model promised.

NDA signed before any briefing · Fully confidential · Available pre-LOI

Integration tracker Day 47 of 180
Technical due diligence Complete
Day 1 readiness Complete
Identity & directory merge In progress
Network & infrastructure In progress
Data migration & consolidation Queued — Day 60
Application rationalisation Queued — Day 90
3 open technical risks tracked Medium severity
247
Users merged
12
Systems mapped
89%
On schedule
60+
M&A integrations delivered
100%
Day 1 readiness achieved
40%
Avg synergy realisation uplift
£2M+
Technical risk identified pre-deal
NDA
Signed before every briefing
Measurable outcomes

What rigorous technical integration delivers

Poor technical integration is the most common reason M&A deals fail to realise their projected synergies. These are the outcomes we consistently deliver.

Results reflect typical engagement outcomes. Deal complexity, target maturity, and scope affect individual timelines.

100%

Day 1 readiness

Every engagement we run achieves operational continuity on Day 1 — employees connected, systems accessible, and communications functional from the moment the deal closes.

£2M+

Risk identified pre-deal

Technical due diligence consistently surfaces material risks — legacy debt, licensing exposure, security gaps — before they become post-close liabilities.

40%

Faster synergy realisation

Structured integration planning and execution compresses the synergy timeline — cost savings and revenue enablement realised months earlier than unmanaged integration.

30%

Tech stack cost reduction

Application rationalisation, licence consolidation, and infrastructure deduplication typically delivers 25–35% reduction in combined technology spend post-integration.

Ideal for

Built for deals where technology risk is material

Technical integration complexity is consistently underestimated by deal teams. We exist to ensure the technology workstream keeps pace with the legal and financial close — and delivers the synergies the model projected.

Discuss your deal →
Best fit
  • Private equity acquirers integrating a platform with add-on acquisitions
  • Corporate acquirers with limited internal integration programme capacity
  • Deals where the target has significant technical debt or infrastructure complexity
  • Cross-border acquisitions requiring multi-jurisdiction infrastructure alignment
  • Carve-outs requiring rapid separation of shared infrastructure and systems
  • Deals where IT synergies are a material part of the investment thesis
Where technical risk concentrates
  • Legacy on-premises infrastructure with no cloud migration path
  • Undocumented or bespoke ERP and CRM integrations
  • Unresolved software licensing compliance and open-source exposure
  • Overlapping or conflicting identity and directory structures
  • Inadequate data segregation or shared-service dependencies
Core services

Technical support across the full deal lifecycle

From pre-LOI due diligence through to full post-merger integration and carve-out execution — a complete technical programme managed by experienced integration architects.

🔍

Technical Due Diligence

Pre-deal assessment of the target's technology estate — infrastructure, applications, security posture, technical debt, licensing, and team capability. Findings mapped to deal risk and synergy impact.

→ Risk report · Synergy model input · Red flags

Day 1 Readiness Planning

Detailed planning for operational continuity from the moment the deal closes — email, identity, network access, communications, and critical applications all functional on Day 1 regardless of integration progress.

→ Comms continuity · Quick wins · Separation plans

Integration Management Office

A dedicated technical IMO to plan, track, and govern the technology integration programme — workstream ownership, dependency mapping, risk management, and status reporting to deal leadership.

→ Programme governance · RAID log · Reporting
🔐

Identity & Directory Integration

Merging Active Directory and Entra ID tenants, resolving UPN conflicts, migrating mailboxes and calendars, harmonising group policies, and establishing a unified identity platform across the combined entity.

→ AD merge · Entra ID · M365 tenant consolidation
🌐

Network & Infrastructure Consolidation

WAN, LAN, and SD-WAN integration across sites. Firewall policy harmonisation, IP addressing conflicts, VPN consolidation, and data centre rationalisation — mapped to a defined consolidation roadmap.

→ WAN/LAN · Firewall · DC rationalisation
💾

Data Migration & Consolidation

Migration of critical data assets — files, email, structured databases, and SharePoint/intranet — from target to acquirer systems. Data mapping, cleansing, and governance throughout.

→ Data mapping · Migration · Governance
⚠️

Security & Compliance Integration

Unified security baseline across the combined entity — endpoint protection, SIEM integration, vulnerability management, and compliance posture (ISO 27001, Cyber Essentials, GDPR) for the merged organisation.

→ Security baseline · SIEM · Compliance merge

Application Rationalisation

Audit and rationalisation of duplicate and redundant applications across the combined estate. Build/buy/retire/consolidate decisions, licence optimisation, and decommissioning roadmap with cost savings quantified.

→ App audit · Decommission roadmap · Savings
✂️

Carve-Out Technical Execution

For divestitures and carve-outs: separation of shared infrastructure, TSA (Transition Service Agreement) management, data segregation, and standing up an independent technology environment for the carved-out entity.

→ TSA management · Infrastructure separation · Independence
Technical due diligence

Find the risks before they find you

Technical due diligence is not a checkbox exercise. It is a structured investigation into every dimension of the target's technology estate — designed to surface material risks, validate synergy assumptions, and inform price and structure negotiation.

What we deliver
  • A written TDD report with findings mapped to deal risk (High / Medium / Low)
  • Synergy model input — validating or adjusting IT cost-out assumptions
  • A post-close integration complexity and timeline estimate
  • Red flag summary for deal leadership and investors
  • Recommended warranty and indemnity language for specific technical risks
Request a TDD scope →
01

Infrastructure & Architecture Review

On-premises and cloud infrastructure assessment. Server estate, networking, DR/BCP capability, hosting costs, and scalability headroom. Cloud readiness and migration cost modelling.

InfrastructureCloud readinessDR/BCP
02

Application Portfolio Assessment

Full application inventory — ERP, CRM, bespoke systems, SaaS subscriptions, integrations, and APIs. Identifying duplication with acquirer estate and flagging sunset or unsupported systems.

ERP/CRMApp inventoryIntegration mapping
03

Security Posture & Cyber Risk

Vulnerability assessment, patch currency, endpoint protection, access controls, incident history, and exposure to common attack vectors. Quantifying remediation cost and residual risk.

Cyber riskVulnerabilitiesIncident history
04

Licensing & Compliance Audit

Software licence compliance review — Microsoft, Oracle, SAP, and custom vendors. Open-source licence exposure. GDPR data processing practices and any outstanding regulatory findings.

Licence complianceGDPROpen-source
05

Technical Debt Quantification

Assessing the cost and risk of deferred technology investment — legacy systems, unsupported platforms, absent documentation, and unresolved architectural decisions that will require post-close investment.

Legacy systemsRemediation costRisk scoring
06

IT Team & Capability Assessment

Evaluating the target's IT function — team structure, capability, key person dependencies, contractor reliance, and cultural fit with the acquirer's technology operating model.

Team structureKey personsCapability gaps
Sample TDD risk register

Typical findings across target types

Illustrative examples of the risk categories and severity levels surfaced during technical due diligence engagements.

Finding Area Severity Deal implication
Microsoft SQL Server licences non-compliant — 40% under-licensed Licensing High Estimated £180k remediation liability — price adjustment warranted
No functioning disaster recovery — RTO undefined, last test 3 years ago Infrastructure High Material operational risk; DR build required within 90 days post-close
Bespoke ERP integration — undocumented, single-developer dependency Applications Medium Key person retention risk; documentation and knowledge transfer required
GDPR data processing register absent; cross-border transfers undocumented Compliance Medium Regulatory exposure; warranty language recommended; 60-day remediation plan
End-of-life Windows Server 2012 on 8 production systems Infrastructure Medium Security exposure; upgrade programme estimated at £45k; 6 months post-close
No MDM solution — 60% of endpoints unmanaged BYOD Security Medium Intune deployment required; cost and timeline factored into integration plan
SaaS spend fragmented — 140 subscriptions with no central governance Licensing / Cost Low Rationalisation opportunity; estimated £60k annual saving post-integration
Integration methodology

A structured programme from Day 1 to full integration

Technology integration is not a single event — it is a programme of interdependent workstreams that must be sequenced, resourced, and governed. Our playbook has been refined across 60+ completed integrations.

Pre-close

Integration Planning

  • IMO setup and workstream leads assigned
  • Combined technology estate mapped
  • Day 1 requirements defined and resourced
  • Synergy model validated and owned
  • Integration risk register opened
  • Clean team protocols established
Day 1 — Day 30

Operational Continuity

  • Email and communications go-live
  • Network connectivity established
  • Critical system access confirmed
  • Identity provisioning for new starters
  • Security baseline applied to target estate
  • First integration status report issued
Day 30 — Day 90

Core Integration

  • AD/Entra ID tenant consolidation
  • M365 tenant merge and mailbox migration
  • Network and WAN consolidation
  • Data migration — files, email, SharePoint
  • Security tools unified across estate
  • Application rationalisation decisions made
Day 90 — Day 180+

Optimisation & Closure

  • Application decommissions executed
  • Licence rationalisation and cost savings confirmed
  • Infrastructure deduplication complete
  • Unified IT operating model established
  • Synergy realisation formally validated
  • Integration programme closed
Integration workstreams

Every workstream tracked against a defined baseline

Our Integration Management Office tracks progress, dependencies, and risks across every technical workstream — giving deal leadership a single, accurate view of integration status at all times.

Identity & Directory Consolidation 65%
AD forest merge underway. 247 of 380 users migrated to unified Entra ID. UPN conflicts resolved. Group policy harmonisation in progress.
M365 Tenant Consolidation 40%
Mailbox migration batch 1 of 3 complete. SharePoint content mapping finalised. Teams governance policy under review. Target completion: Day 75.
Network & Infrastructure 55%
WAN connectivity live across 4 of 7 sites. Firewall policy merge 60% complete. VPN consolidation on track. Data centre rationalisation planned for Day 90.
Security Baseline Alignment 80%
EDR deployed to all target endpoints. Patch gap remediated. MFA enforced across combined estate. SIEM integration pending — ETA Day 60.
Application Rationalisation 15%
Application inventory complete — 140 total, 38 identified as duplicates. Rationalisation decisions in review. Decommission roadmap to be published Day 90.
Data Migration & Consolidation 0%
Data mapping complete. Source-to-target schema documented. Migration tooling selected. Scheduled to commence Day 60 following identity consolidation milestone.
Carve-out execution

Technology separation as complex as the integration

Carve-outs demand everything that integrations do — but in reverse, under TSA clock pressure, and with the added complexity of establishing a fully independent technology environment for an entity that has never stood alone.

Discuss your carve-out →
01

Shared Service Dependency Mapping

Identifying every technology service the carve-out entity currently receives from the parent — ERP, email, network, helpdesk, security tooling — and defining the separation scope for each.

TSA scopeDependency mapping
02

TSA Design & Management

Structuring Transition Service Agreements that are specific, time-bound, and technically deliverable. Managing service consumption and exit against TSA milestones to minimise exit costs.

TSA draftingExit milestonesCost tracking
03

Stand-Up of Independent Infrastructure

Building the carve-out entity's independent technology environment — cloud tenancy, network, security, and end-user computing — on a timeline aligned to TSA exit obligations.

Cloud stand-upM365 greenfieldNetwork build
04

Data Segregation & Transfer

Identifying, extracting, and transferring the data assets belonging to the carved-out entity — with clean separation from parent data, full chain of custody, and GDPR-compliant transfer mechanics.

Data separationGDPR transferAudit trail
05

IT Team Transition

Managing the TUPE transfer or redeployment of IT staff, knowledge transfer from parent IT function, and establishing the carve-out entity's independent IT operating model and governance.

TUPEKnowledge transferIT operating model
Case studies

Delivered across deal types and sectors

Outcomes from M&A technical integration, due diligence, and carve-out engagements across private equity, corporate, and public sector deals.

£2.4M

Technical risk identified during pre-deal due diligence for a PE acquirer — comprising £1.1M of undisclosed licensing liability, £800k of infrastructure remediation, and £500k of GDPR exposure — resulting in a successful price renegotiation.

Technical Due Diligence
Day 1

Full operational continuity achieved on close day for a 600-user cross-border acquisition — email, identity, network access, and communications live across 3 countries before the ink was dry, with zero service interruption reported.

Day 1 Readiness
£1.1M

Annual technology cost reduction realised 4 months post-close following application rationalisation (38 systems decommissioned), M365 licence consolidation, and infrastructure deduplication across two merged entities.

Post-Merger Integration
90 days

Complete technology carve-out for a 350-user entity divested from a FTSE 250 business — independent M365 tenant, network, security, and ERP environment stood up within 90 days, exiting all parent TSAs ahead of the contractual deadline.

Carve-Out Execution
Engagement models

Scoped to your deal, your timeline, your complexity

Every M&A engagement is different. We offer fixed-scope due diligence engagements, full integration programme delivery, and advisory retainers for deal teams that need embedded technical expertise throughout the transaction lifecycle.

Fixed scope
Technical Due Diligence
Pre-deal assessment · 2–4 weeks
From £18,000
  • Infrastructure and architecture review
  • Application portfolio assessment
  • Security posture and cyber risk review
  • Licensing compliance audit
  • Technical debt quantification
  • IT team and capability assessment
  • Written TDD report with risk register
  • Synergy model input and integration estimate
  • Integration management office
  • Hands-on integration delivery
Request a TDD scope →
Advisory
Deal Advisory Retainer
Embedded technical advisor · Per month
From £8,500 / month
  • Embedded technical M&A advisor on deal team
  • Technology workstream leadership
  • Vendor and management team challenge
  • Integration planning and governance
  • Risk identification and escalation
  • Board and investor technology narrative
  • Available pre-LOI through close
  • Hands-on integration execution
Discuss advisory scope →
FAQ

Common questions about M&A technical integration

Questions from deal teams, portfolio companies, and acquirers navigating the technology workstream of a transaction.

Ideally during the exclusivity period, after the management presentation but before final terms are agreed. This gives findings maximum leverage for price negotiation and warranty structuring. We can also run indicative TDD pre-LOI if technology risk is a primary deal concern — useful for particularly complex or legacy-heavy targets. Earlier is always better; post-close findings have limited remedies.
We sign an NDA before any briefing or data room access. All work is conducted by a named, dedicated team. We do not use the existence of an engagement in any marketing or case study without explicit written consent. We have worked on transactions involving listed entities, pre-IPO companies, and highly sensitive competitive situations — and have never had a confidentiality breach.
Day 1 readiness means that on the day legal completion occurs, every employee of the acquired business can access the systems and communications they need to do their jobs — regardless of how far integration has progressed. This is distinct from full integration. Failure to achieve Day 1 readiness is visible to employees, customers, and suppliers, and materially damages confidence in the deal and the acquirer's management capability.
For SMB-to-mid-market integrations (up to 500 users, single geography), we typically achieve full technology integration within 90–180 days. Larger, cross-border, or multi-entity integrations run 12–24 months. The Day 1 milestone is always achievable within the first 30 days regardless of overall complexity. Application rationalisation and infrastructure deduplication are usually the longest workstreams.
A Transition Service Agreement is a contract between seller and buyer (or parent and carve-out) in which the seller continues to provide specified technology services to the buyer for a defined period post-close while the buyer builds independent capability. TSAs should be specific (named services with defined SLAs), time-limited (typically 3–18 months), and priced to incentivise prompt exit. Poorly structured TSAs are one of the most common sources of post-close disputes in technology carve-outs.
Yes — this is the most common model. We operate as the integration programme office, providing governance, specialist technical execution, and accountability, while the internal IT teams of both entities remain responsible for BAU operations. We are explicit about the boundary between integration programme work and BAU to prevent confusion and protect operational stability throughout the process.
Get started

Protecting your deal starts with a conversation.

Book a confidential pre-deal consultation. We'll understand your transaction, share relevant experience, and tell you exactly where technical risk concentrates in deals like yours.

NDA before every briefing Available pre-LOI 60+ integrations delivered Response within 24 hours