AS/400 migration services that prove each move first To the cloud or off the platform, with old and new side by side

A migration starts with knowing what you have. We inventory every program, file, batch job and interface, follow the calls to see which programs run together, and group them into call streams: every program one business task calls, start to finish.

Then we choose a route for each stream, with its cost, its risk and the order it moves in. Most companies keep some of the IBM i, move some of it, and retire a surprising amount.

Rehosting moves the same IBM i, with the same programs and data, from your machine room to Power servers in a cloud data center, such as IBM Power Virtual Server. Your hardware and its upkeep go away, and the cloud provider handles the servers.

It's the quickest move, but the RPG and the skills problem stay. We plan it as a first step when the hardware deadline is close.

When you want off the platform, we rebuild one call stream at a time in .NET or Java on Azure, AWS or Google Cloud. AI agents read the RPG and write the rules down in plain language first, and engineers write the new code and sign every change.

We don't hand you code from a converter that nobody can read. Gartner finds AI proven at reading old code and unproven at converting it end to end (October 2026).

We map every physical and logical file to the target database, convert packed decimals, dates and EBCDIC text, and reconcile the moved data row by row against the source. Batch jobs move to a scheduler on the new platform, with the same order and checks.

Before a stream switches over, the same transactions run on both systems and every field written to the database is compared. One mismatch stops the release.

Until then, the IBM i stays the system of record, and nothing changes for the people who use it.

They're the same platform under different names. IBM launched the AS/400 in 1988, renamed it iSeries in 2000, System i in 2006, and IBM i in 2008. Programs written for the AS/400 still run on IBM i today.

Rehosting the IBM i on cloud Power servers, converting the code with a tool, rebuilding the applications on a new stack, replacing them with a package, or a mix. Most companies use more than one, part by part.

Not as a platform. IBM i is current, runs on modern Power servers and supports SQL, APIs and open-source languages. What ages is the RPG written decades ago, and the shrinking number of people who can change it.

Core transactions: order entry, billing, inventory, warehouse, payroll, policies and claims. It's common in manufacturing, distribution, retail, banking and insurance, where it rarely goes down.

Rehosting can take weeks. Rebuilding takes longer and depends on the number of call streams, so we move one stream at a time and the business sees the first one live long before the last.