Implementation
The ServiceNow CMDB was empty. Every CI — server, network device, application — existed only in undocumented or siloed systems.
ITOM Discovery: Building a Trusted CMDB from Zero
How Ramisun approaches ITOM Discovery and Service Mapping for organisations with no reliable configuration data — establishing automated discovery, mapping business services, and putting governance in place that keeps the CMDB accurate.
3,000+CIs DiscoveredServers, network devices, containers
30+Business Services MappedEnd-to-end service dependencies
100%Change Audit CoverageEvery change linked to a CI
Direct Answer
How do you build a ServiceNow CMDB when there is no existing data?
Building a CMDB with no existing data starts with Servic eNow IT Operations Management (ITOM) — Discovery, Service Mapping and CMDB Health Checks deployed across a multi-site network. The approach identifies and documents every server, network device and application in a previously undocumented environment — then mapped those CIs into 30+ business service maps that show, in real time, what breaks when anything fails. The result is a reliable single source of truth for IT assets, enabling change management and incident resolution that can be done confidently.
MID Server Architecture & Network SegmentationAutomated Discovery — Servers, Network, ContainersTroux API Integration for Legacy CI Migration
The Scenario
The scenario: an estate that grew without systematic asset discovery
Typical Sector🚂 Asset-Heavy & Multi-Site
MarketUnited States
Organisation SizeEnterprise (5,000+ employees)
Engagement TypeITOM Discovery + Service Mapping
Indicative Timeline10 weeks to first discovery cycle
Platform ScopeServiceNow Rome / ITOM Suite
A recurring position in asset-heavy, multi-site organisations. The IT estate — servers, network devices, containers and business applications — has grown organically across facilities and operations centres with no systematic discovery, leaving leadership without a reliable view of what is running or what depends on what.
With infrastructure investment planned and compliance reporting expectations rising, the organisation needs a single source of truth before it can safely manage change or assess incident impact.
- No prior CMDB — discovery started from absolute zero
- CI data existed only in spreadsheets, config files, and tribal knowledge
- Change-related outages were frequent with no way to assess blast radius in advance
The Problem
Operating Blind in a Critical Infrastructure Estate
An organisation that does not know what technology it is running, or how those systems depend on each other, cannot safely manage change — or recover quickly when something fails.
The POC required extracting CI data from a legacy tool (Troux) and cross-referencing with network scans. No automated discovery existed.
Zero application-to-infrastructure service maps. Impact analysis for changes or incidents was impossible — teams relied on guesswork and experience.
The Solution
How Ramisun Approaches ITOM Discovery & Service Mapping
A six-stage approach that builds the CMDB from zero and progressively layers service maps and governance on top of it.
MID Server Architecture & Network Segmentation
Deployed multiple MID Servers across site segments to ensure discovery coverage across firewalled network zones, operations centres, and remote facilities without exposing credentials across segments.
Automated Discovery — Servers, Network, Containers
Configured Discovery schedules to identify every server (Windows, Linux), network device (switches, routers), and container across all sites. A first full sweep typically documents every server, network node and container across the estate.
Troux API Integration for Legacy CI Migration
Built a custom IntegrationHub spoke to extract existing CI data from the legacy Troux system — validating, deduplicating, and migrating records into the new ServiceNow CMDB to preserve historical asset relationships.
Business Service Maps — 30+ Application Services
Used Service Mapping to build application-layer service maps connecting discovered infrastructure CIs to the business services that run on them. Maps cover freight management, operations control, communications, and facility systems.
SCOM Integration for Event Management
Integrated Microsoft SCOM with ServiceNow Event Management via IntegrationHub — surfacing infrastructure alerts directly against their related CMDB CIs, enabling faster incident identification and auto-correlation.
Change Management & CI Retirement Governance
Configured Change Management to require CMDB CI selection on all change requests — ensuring every infrastructure change is linked to a CI, enabling post-change impact tracking and planned CI retirement workflows.
Target Outcomes
What This Approach Is Designed to Achieve
0 CIs documented
6,627Total CIs in CMDB
Complete Asset Inventory
2,436 servers · 1,027 network nodes · 3,164 containers — all discovered, documented, and mapped.
Guesswork for impact
InstantBlast Radius Visibility
Real-Time Impact Analysis
Every alert now traces instantly to affected business services — on-call teams know what's impacted before they pick up the phone.
Manual, months of effort
AutoCMDB Maintenance
Self-Maintaining CMDB
Scheduled Discovery runs keep the CMDB current automatically — no manual reconciliation sprints, no drift between reality and records.
Zero service maps
30+Business Services Mapped
Application-Layer Visibility
Freight management, ops control, communications, and facility systems all mapped — change management is now genuinely safe.
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What our clients say
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“Ramisun didn't just implement ServiceNow — they redesigned how our teams work. Their AI agents now handle most routine requests.”
VP of IT OperationsEnterprise Healthcare Network
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“Their marketplace expertise was the difference. We went from prototype to a certified ServiceNow Store listing our team could sell.”
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“Transparent, agile, and genuinely business-first. Every sprint ended with something we could show our executives.”
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“The CMDB work alone paid for itself. We finally trust our configuration data enough to automate against it.”
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“Hypercare was real hypercare. Go-live week felt boring in the best possible way.”
IT Service OwnerTelecom Operator
★★★★★
“Ramisun didn't just implement ServiceNow — they redesigned how our teams work. Their AI agents now handle most routine requests.”
VP of IT OperationsEnterprise Healthcare Network
★★★★★
“Their marketplace expertise was the difference. We went from prototype to a certified ServiceNow Store listing our team could sell.”
Co-founder & CTOAI-Funded Startup, Silicon Valley
★★★★★
“Transparent, agile, and genuinely business-first. Every sprint ended with something we could show our executives.”
Director, Digital ProgramsFinancial Services Firm
★★★★★
“The CMDB work alone paid for itself. We finally trust our configuration data enough to automate against it.”
Head of Platform EngineeringGlobal Manufacturer
★★★★★
“Hypercare was real hypercare. Go-live week felt boring in the best possible way.”
IT Service OwnerTelecom Operator
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