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IT system

An IT system is an organized combination of people, processes, technology, and data that collects, processes, stores, or communicates information.

How 2 Manning books explain it

Simple Object-Oriented Design: Create clean, maintainable applications

An information system is a software system that organizes and processes information for a business or other domain.

How it is used
Frames enterprise software as coordinated frontend, backend, database, business-logic, and integration responsibilities.
How deep it goes
Explains major layers, backend roles, request flow, persistence, and integrations, but defers detailed architectural patterns and frontend design.
Examples
Uses online-store, financial, e-learning, and PeopleGrow! systems, including training management and company-service integrations.
What you can do after
Evaluate/understand how an enterprise backend receives requests, applies business rules, persists information, and integrates with other systems.

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Digital Twins in Action

An information technology system is a computing system that manages enterprise information, applications, and business processes rather than directly controlling physical processes.

How it is used
Supplies business context that turns OT measurements into more actionable digital twin insights.
How deep it goes
Defines IT by its business role, then develops ERP data access and IT/OT integration tradeoffs without detailing an end-to-end deployment.
Examples
Uses pump installation records, a SAP sales-order API query, and a segmented IT/OT network figure.
What you can do after
Apply it via a SAP OData API to retrieve business records, and evaluate security and latency tradeoffs when combining IT and OT data.

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Related concepts

These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.