Order-to-Door™ Digital Transformation Framework · All Order-to-Door phases · Legacy Modernization · API Development

API Layer Development

Q: Can this work with AS/400 (IBM i)?

Yes, when the IBM i environment provides a safe supported access path. Depending on the application and ownership boundary, that may involve DB2 access, program calls, data queues, files, vendor interfaces, or a controlled middleware layer.

Q: Is this a permanent solution or just a bridge?

It can be either. Some organizations use the API layer as a permanent integration strategy. Others use it as a bridge during phased migration -- decoupling consumers from the legacy system so it can be replaced without disrupting integrations.

Q: What about write operations back to the legacy system?

We support both read and write APIs. Write operations use the legacy system's own transaction mechanisms (stored procedures, program calls) to ensure data integrity and business rule enforcement.

Connect legacy manufacturing systems without replacing the core. Legacy ERP, production, warehouse, quality, and custom systems often hold records that portals, analytics, automation, and partner integrations need. We engineer governed APIs around those records while protecting the stable core and documenting ownership, recovery, and change.

Discuss the Business Objective Start Your Transformation Roadmap

Order-to-Door™ Digital Transformation Framework

API Layer Development improves the supply-chain flow. It is not a standalone IT project.

Use this capability when the framework reveals a broken handoff between people, systems, records, partners, or decisions that prevents the supply chain from keeping the customer promise.

Framework role

Order-to-Door™ maps the people, processes, systems, records, and decisions behind the customer promise before Metrotechs engineers the response.

Odoo on AWS system role

Odoo on AWS is the ERP core for approved integration work, with clear source ownership, data contracts, monitoring, recovery, and support around the systems that must remain connected.

AI on Your Data role

AI on Your Data depends on the governed records and reliable exchanges established here before it can safely interpret information or assist a workflow.

The Problem

Legacy systems hold critical manufacturing records but cannot exchange them safely.

Integration problems begin when systems exchange fields without agreement about the operating record, timing, ownership, validation, recovery, and exception response.

What leaders see

People reconcile the same records repeatedly.

Orders, inventory, production, quality, and shipment status move through exports, re-entry, calls, and side files.

What is actually happening

The handoff has no governed contract.

Identifiers, source ownership, timing, validation, monitoring, and recovery differ across systems and organizations.

What gets worse

More connections create more uncertainty.

Point-to-point fixes multiply while failures become harder to detect, explain, assign, and recover.

What Changes

What API Layer Development includes.

Legacy ERP, production, warehouse, quality, and custom systems often hold records that portals, analytics, automation, and partner integrations need. We engineer governed APIs around those records while protecting the stable core and documenting ownership, recovery, and change.

Governed API Contracts

Expose approved legacy records and operations through documented interfaces with explicit identifiers, schemas, validation, versioning, ownership, and support boundaries.

Data Abstraction

Abstract legacy data models into modern, clean interfaces. Consumers see logical business objects, not cryptic legacy table structures.

Real-Time & Batch

Use request-based, event-driven, or scheduled exchange according to the decision, transaction volume, source-system limits, and recovery requirement.

Authentication & Authorization

OAuth 2.0, API keys, and role-based access control. Secure access to legacy data with modern security standards.

Rate Limiting & Caching

Protect the legacy system with explicit traffic limits, workload controls, and caching rules tied to acceptable data age and source-system capacity.

Monitoring & Logging

API usage dashboards, error tracking, and performance monitoring. Know who's calling what, how often, and whether it's working.

How It Fits Manufacturing

How this capability fits the manufacturing operation.

Integration EngineeringWhich records must move, which system owns them, how current they must be, and what happens when exchange fails.

Governance dependencyEach interface needs an accountable source, defined identifiers, validation, recovery, monitoring, and ownership before teams can trust the exchange.

Records and handoffs to connect

orders

inventory and materials

production status

quality records

shipments and exceptions

What must be defined before engineering begins

What the manufacturing business needs to change and why.
Which systems, records, risks, and readiness gaps shape the work.
What should be built, how it fits the architecture, and in what order.

Supply Chain Services and Planning

What to evaluate next.

Follow the dependencies behind this service instead of treating it as an isolated project.

Order Capture and Validation

Turn the accepted promise into a complete, validated operating commitment downstream teams can trust. This is the Supply Chain service context in which API Layer Development may be used as a delivery capability.

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Ship, Deliver, and Confirm

Coordinate shipment, delivery, acceptance, customer communication, proof, and financial handoff. This is the Supply Chain service context in which API Layer Development may be used as a delivery capability.

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Customer, Supplier & Partner Portals

Expose approved records and transactions through permissioned customer, supplier, and partner experiences.

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Operational Analytics

Reconcile connected records into dependable operating measures, status, and decisions.

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Workflow and Exception Automation

Route the actions and exceptions that connected systems reveal.

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Start Your Transformation Roadmap

New material work begins in Launchpad so Metrotechs can validate the operating need, evidence, feasibility, architecture direction, and sequence before engineering begins.

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Systems Explained

Use these references to understand the systems that may support this Supply Chain service. They do not redefine the service as an IT project.

ERP

Understand the operating records, workflows, and system-of-record boundaries an ERP should own.

Understand the system

Start With the Manufacturing Continuity Objective

Define the smallest sound response and delivery sequence.

Metrotechs determines what the operation actually requires before selecting technology. New material work begins in Launchpad so the evidence, feasibility, architecture direction, priorities, and sequence can be validated before engineering begins.

Discuss the Business Objective Start Your Transformation Roadmap

Metrotechs designs, builds, integrates, and supports the approved solution so demand, fulfillment, and service commitments remain reliable.

A technical request does not bypass discovery. The proposed solution remains a working hypothesis until Metrotechs validates it in Launchpad and maps continuity before build.

Delivery sequence

How Metrotechs delivers API Layer Development.

Legacy ERP, production, warehouse, quality, and custom systems often hold records that portals, analytics, automation, and partner integrations need. We engineer governed APIs.

API Requirements

Define which data and operations need to be exposed. Prioritize by business value -- what integrations are blocked today?

Legacy System Analysis

Analyze how to extract data from the legacy system -- direct database, stored procedures, file interfaces, or screen automation.

API Design & Build

Design API contracts, build the middleware layer, and implement data mapping between legacy formats and modern JSON/REST.

Testing & Security

Load testing to ensure legacy system stability, security testing, and integration testing with consuming applications.

Documentation & Onboarding

Publish API documentation, developer guides, and sample code. Onboard internal teams and third-party integrators.

FAQ

Questions to answer before changing this stage.

Straight answers to what manufacturing leaders ask before committing budget to this work.

Will the API layer slow down our legacy system?

We measure the legacy system's capacity and access paths before selecting an integration pattern. Read replicas, connection pooling, caching, scheduled extraction, and rate limiting are options, but the design must be validated against the actual workload and recovery plan.

Can this work with AS/400 (IBM i)?

Is this a permanent solution or just a bridge?

What about write operations back to the legacy system?