Infor LN Review 2026: Complex Manufacturing ERP for Aerospace & Defense

What Is Infor LN?

Infor LN is an enterprise ERP system built for complex discrete manufacturing environments — organizations that manage long-running projects, multi-level bills of material, engineering change orders, and maintenance/repair/overhaul (MRO) operations. It is Infor's flagship ERP for aerospace & defense, automotive OEMs and tier suppliers, and industrial equipment manufacturers.

Originally developed by Baan (one of the "Big Five" ERP vendors in the 1990s alongside SAP, Oracle, PeopleSoft, and JD Edwards), LN has evolved through multiple ownership changes — SSA Global, then Infor — into a mature, deep-function manufacturing ERP with over 30 years of development behind it.

Today, Infor LN is available as a cloud deployment through Infor CloudSuite Aerospace & Defense and Infor CloudSuite Automotive, running on AWS with the Infor OS platform (Ming.le UX, Coleman AI, Birst analytics, ION middleware).

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Key Modules & Capabilities

Project Manufacturing

Infor LN's project manufacturing module is its defining strength. It manages the full lifecycle of engineer-to-order (ETO) and make-to-order (MTO) projects, including:

• Project budgeting and cost control with earned value management (EVM)
• Multi-level project structures linking engineering, procurement, production, and delivery
• Progress billing and milestone invoicing tied to project phases
• Revenue recognition aligned with ASC 606 / IFRS 15 for long-term contracts

Engineering Change Management

LN provides robust engineering change control — critical for aerospace and defense where configuration management is a regulatory requirement:

• Engineering change requests (ECR) and engineering change orders (ECO) workflows
• Effectivity-based BOM management (date, serial number, lot)
• Full revision history and audit trails
• Integration with CAD/PLM systems

Maintenance, Repair & Overhaul (MRO)

The MRO module supports aftermarket service operations for complex equipment:

• Work order management for repair and overhaul
• Serialized component tracking with full lifecycle history
• Warranty management and service contract billing
• Rotable and repairable parts inventory management

Advanced Planning & Scheduling

• Multi-site, multi-plant capacity planning
• Finite capacity scheduling with constraint-based optimization
• Material requirements planning (MRP) with project-aware netting
• ATP/CTP (available-to-promise / capable-to-promise) calculations

Financial Management

• Multi-company, multi-currency general ledger
• Intercompany transactions and transfer pricing
• Cost accounting with actual, standard, and project-based costing
• Fixed asset management and financial consolidation

Supply Chain & Logistics

• Procurement with approved supplier lists and long-term agreements
• Warehouse management with serialized inventory
• Quality management with inspection plans and nonconformance tracking
• EDI and ASN processing for automotive supply chain requirements

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Infor LN Pricing Benchmarks

Infor LN pricing depends on deployment model, user count, modules, and industry edition. Benchmark costs:

On-premise licensing uses perpetual licenses (typically 3–5x the annual cloud subscription as a one-time fee) plus 18–22% annual maintenance. Cloud subscriptions include infrastructure, maintenance, and upgrades.

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Strengths

• Project manufacturing depth — Earned value management, progress billing, and multi-level project structures are best-in-class for ETO/MTO environments
• Aerospace & defense compliance — Built-in support for ITAR, EAR, AS9100, DFARS, and government contract accounting (DCAA compliance)
• MRO capabilities — Serialized component tracking, rotable inventory, and service contract management without third-party add-ons
• Multi-site manufacturing — Mature multi-company, multi-plant architecture for organizations with complex corporate structures
• Baan heritage — 30+ years of complex manufacturing logic refined through real-world deployments at major manufacturers

Weaknesses

• Steep learning curve — The depth of functionality means longer training periods and higher reliance on experienced consultants
• Smaller partner ecosystem — Fewer implementation partners compared to SAP, Oracle, or Dynamics 365; concentrated among specialized firms (Infosys, Accenture, Ciber/HCL, and Infor Consulting Services)
• Dated UX in some areas — While Infor OS has modernized the interface, some deeper configuration screens still reflect the legacy Baan heritage
• Less suited for simple manufacturing — Overkill for job shops or simple discrete manufacturers who would be better served by CloudSuite Industrial or Epicor Kinetic

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How Infor LN Compares to SAP and Oracle

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Who Should Consider Infor LN?

Good fit:

• Aerospace and defense manufacturers (OEMs and tier suppliers)
• Complex project-based manufacturers with ETO/MTO production
• Automotive OEMs and major tier suppliers with EDI/JIT requirements
• Industrial equipment manufacturers with aftermarket MRO operations
• Organizations needing ITAR, DFARS, or AS9100 compliance built into ERP

Not the best fit:

• Simple discrete manufacturers → consider CloudSuite Industrial
• Process manufacturers → consider Infor M3
• Small manufacturers (<50 employees) → consider Epicor Kinetic or Acumatica
• Finance-first organizations → consider Oracle ERP Cloud or SAP S/4HANA

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Frequently Asked Questions

Is Infor LN the same as Baan?

Infor LN is the direct descendant of Baan ERP. Baan was acquired by SSA Global in 2003, which was then acquired by Infor in 2006. The product was renamed from Baan to Infor ERP LN and has received continuous development since then. Organizations still running Baan IV or Baan V can upgrade to Infor LN, and many Baan consultants now work with LN.

How long does an Infor LN implementation take?

Typical implementations range from 12 to 24 months for mid-market manufacturers and 18 to 36 months for large, multi-site enterprises. The complexity of project manufacturing configuration, data migration from legacy systems, and integration requirements are the primary drivers of timeline.

Can Infor LN run in the cloud?

Yes. Infor LN is available as a cloud deployment through CloudSuite Aerospace & Defense and CloudSuite Automotive, running on AWS. Cloud deployments include Infor OS (modern UX, Coleman AI, Birst analytics) and automatic updates. On-premise deployment remains available for organizations with specific security or regulatory requirements.

What is the difference between Infor LN and CloudSuite Industrial?

Infor LN is designed for complex discrete manufacturing — aerospace, defense, automotive, and industrial equipment with project-based, engineer-to-order production. CloudSuite Industrial (SyteLine) is designed for general discrete and mixed-mode manufacturing — metal fabrication, electronics, plastics, and general industrial products. LN has deeper project manufacturing, MRO, and compliance capabilities; CSI is simpler to implement and better suited for straightforward manufacturing operations.

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Next Steps

Infor LN remains one of the strongest ERP platforms for complex, project-based discrete manufacturing — particularly in aerospace, defense, and automotive. Its depth in project manufacturing, MRO, and regulatory compliance is difficult to match. The trade-off is a steeper learning curve and a smaller partner ecosystem compared to SAP or Oracle.

Related pages:

• Infor M3 Overview
• Infor CloudSuite Industrial
• Infor M3 Costs
• Infor LN Costs & Pricing