IBM i / AS400 / iSeries Migration

AS400 / IBM i Modernization

RPG, RPG ILE, CL, DDS, and DB2 for i — to Modern Cloud Platforms

Full IBM i / AS400 / iSeries ecosystem coverage: RPG through RPG ILE, CL/CLLE, DDS physical and logical files, display files, printer files, and Query/400 — automatically converted with parallel-run validation and full rollback.

IBM i systems run critical business applications across manufacturing, distribution, retail, and financial services — but most migration tools treat RPG as a COBOL afterthought. QuickCloud is built from the ground up for the IBM i programming model: deep RPG, RPG ILE, CL, and DDS analysis that understands how IBM i programs actually work, not a z/OS tool adapted after the fact.

Full IBM i Asset Coverage

Every source type your IBM i system uses — auto-detected from content, no manual classification.

RPG Source

.rpg (original RPG).rpg4 / .rpgiv (RPG IV).rpgle (RPG ILE).sqlrpgle (SQL RPG ILE).rpglesql

Control Language

.cl (CL source).clp (CL program).clle (CL ILE).clsrc

Data Description Specs

.dds (generic DDS).pf (physical file).lf (logical file).dspf (display file).dspfd.prtf (printer file).prtfd

Communication & Commands

.icf (ICF file).icff.cmd (command definition).cmdsrc

Help & Menus

.pnlgrp (UIM panel group).pnl.mnu (menu definition).menusrc

Query & Reporting

.qmqry (QM Query).qry (Query/400)

Source → Target Mapping

RPG / RPG ILE programs

Java, Python, or C# services

CL programs

Shell scripts, Ansible, or Terraform

DDS physical files

PostgreSQL, Snowflake, or Azure SQL

DDS logical files

SQL views and indexes

Display files (5250)

React / Vue / Angular web UI (QA-validated)

Printer files

PDF generation services or reporting APIs

Query/400 reports

SQL queries, Power BI, or Tableau

CL job queues

Kubernetes jobs, AWS Batch, or Azure Functions

How It Works

Ingest IBM i Source

Upload RPG, CL, and DDS source directly — or connect to your existing IBM i SCM (CA Endevor equivalents, QSYS library structures). Source platform is auto-detected from content characteristics.

Complexity Analysis & Risk Matrix

Automated complexity scoring across your RPG portfolio: embedded SQL detection, service program dependencies, DDS file cross-references, and CL job chain analysis. Every program gets a risk classification before migration begins.

AI-Assisted Conversion

RPG and RPG ILE programs are semantically analyzed and converted to target languages. DDS files are converted to DDL schemas. Business logic extraction automatically surfaces embedded rules in RPG subprocedures for review and approval.

Parallel-Run Validation

Legacy IBM i and migrated cloud systems execute side-by-side with identical inputs. Output comparison validates functional equivalence before any production cutover. The 5250/display file layer can be validated via the QA & Testing tool.

5250 Display File Validation via QA Tool

QuickCloud's QA & Performance Testing tool records 5250 green-screen sessions and auto-generates regression tests that validate the modern web UI produces identical outputs. No code required — testers record by interacting with the display file, and the platform handles EBCDIC conversion, field mapping, and screen comparison automatically.

See QA & Testing details

Migrating Both z/OS and IBM i?

Many enterprises run both z/OS mainframes and IBM i systems — often sharing data via MQ, DB2 cross-platform queries, or EDI interfaces. QuickCloud handles both platforms in a unified project. Source platform is auto-detected from content, and the 10-phase methodology applies across all source types with a single governance workflow.

See z/OS mainframe migration

20+

IBM i / AS400 asset types supported

Auto

Platform detection — no manual config

10-phase

Guided migration methodology

100%

Rollback capability at every phase gate

Frequently Asked Questions

QuickCloud supports the full IBM i ecosystem: RPG (original and RPG IV), RPG ILE, SQL RPG (.sqlrpgle), CL/CLP/CLLE, DDS for physical and logical files (.pf, .lf), display files (.dspf), printer files (.prtf), intersystem communication (.icf), command definitions (.cmd), UIM panel groups (.pnlgrp), menu definitions (.mnu), and Query/400 (.qmqry, .qry).

Our refactoring engine analyzes RPG and RPG ILE source at the semantic level — understanding data structures, file I/O, subprocedures, and service programs — and converts to Java, Python, or C#. Embedded SQL RPG (.sqlrpgle) is handled natively, preserving database interaction patterns with the target relational platform.

Yes. DB2 for i physical and logical files (defined via DDS) are analyzed and migrated to modern databases including PostgreSQL, Snowflake, AWS RDS, Azure SQL, and Google Cloud Spanner. DDS record format definitions are converted to standard DDL schemas, and logical files are reimplemented as views or indexes.

DDS display files (.dspf, .dspfd) and printer files (.prtf, .prtfd) are analyzed as part of the program inventory. The QA & Performance Testing tool can record 5250 sessions and generate regression tests to validate that the modern web UI produces identical outputs to the original 5250 screens.

Yes. Many enterprises run both z/OS mainframes and IBM i systems. QuickCloud handles both platforms in the same migration project — source platform is auto-detected from content, and the 10-phase methodology applies across all source types. You can migrate z/OS COBOL and IBM i RPG in a unified workflow.

AWS, Microsoft Azure, and Google Cloud Platform, as well as on-premises and hybrid deployment. Target runtimes include Java, Python, C#, Node.js, containerized microservices, and Terraform for infrastructure-as-code.