A

API Manager / API Gateway

Software that sits between IBM i data and outside applications to publish, secure, monitor, and control API traffic in one place.

AS/400

The older but still widely used name for the IBM midrange platform lineage now commonly referred to as IBM i.

D

Db2 for i

The integrated database technology used within IBM i environments.

Disaster Recovery

The people, process, site, and technology plan that restores operations after a serious outage or business disruption.

DRaaS (Disaster Recovery as a Service)

A cloud-hosted recovery environment, owned and operated by a provider, that an organization can fail over to during a disaster instead of maintaining its own secondary site.

G

Green Screen

A shorthand term for traditional text-based IBM i user interfaces that remain common in mature business workflows.

H

HAaaS (High Availability as a Service)

A subscription model where a managed provider operates real-time replication and failover for IBM i on a buyer's behalf, instead of the buyer running HA software in-house.

High Availability

A continuity approach focused on keeping critical systems running or recoverable with minimal interruption.

I

IBM i

IBM's integrated operating system and platform family that evolved from the AS/400 lineage and continues to run many business-critical workloads.

IBM i Cloud Hosting

Running IBM i workloads on Power hardware hosted by IBM or a third-party provider, rather than on servers owned and operated on site.

Integrated File System (IFS)

The stream-file, directory-based storage layer built into IBM i that works alongside the traditional library and object structure.

L

Legacy IBM i ERP Platforms (System21, BPCS, MAPICS)

A group of long-running ERP products, now owned by Infor, that many IBM i organizations still operate: System21, BPCS (now Infor LX), and MAPICS (now Infor XA).

M

Modernization

A phased effort to improve IBM i systems, interfaces, integrations, workflows, or development practices without abandoning the business value they already hold.

Multi-Factor Authentication

An authentication approach that requires more than one proof of identity before access is granted.

Q

QSECURITY (Security Levels)

The IBM i system value that sets how much security enforcement the operating system applies, ranging from level 20 to level 50.

R

RPO

Recovery Point Objective ... the amount of data loss the business can tolerate between the last good copy and the failure event.

RTO

Recovery Time Objective ... the target amount of time a business can tolerate before a system is restored.

S

SIEM

Security Information and Event Management: centralized platforms that collect, correlate, and alert on security event logs across an organization's systems, including IBM i.

IBM i Software Glossary

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