Can Backstage serve as a software inventory for CIS Control 2 and NIST CSF ID.AM-02?
Backstage catalog components, APIs and resources can carry much of the data that a software inventory needs, but they do not replace a full asset inventory. A security or compliance lead preparing for an assessment should treat the catalog as the system of record for applications and services the platform team owns, and plan separately for hardware, data stores and shadow software that never passed through a template. Neither CIS Controls nor the NIST Cybersecurity Framework certifies anything. CIS states that the Controls do not replace any regulatory or compliance scheme, and NIST does not offer certifications or endorsements of CSF implementations. DeployOpen prepares the catalog, its ownership rules and the evidence exports, while the assessor decides whether the inventory meets the requirement.
Against CIS Safeguard 2.1, the catalog maps reasonably well to the title, publisher and business purpose of each software entry. A Component can carry the product name, a spec.owner reference and a description of its purpose, while the publisher and first-use date usually need custom annotations because the default model does not hold them. Against NIST CSF 2.0 ID.AM-02, the question is whether the inventory stays current. Catalog entries are only as current as the descriptor files, the ingestion schedule and the processes that retire entities. Decide before build how often the Safeguard 2.1 review will run (the CIS review cadence is at least twice a year), who signs it off, and what happens to components that stop appearing in source.
Confirm three things with your assessor before you commit to the catalog as evidence: which Safeguards and CSF Subcategories they will test against, whether they accept catalog exports as a point-in-time record, and what they expect for software installed outside Git. The CIS Controls Assessment Specification defines the measures for Safeguard 2.1, which is the most useful starting point for that conversation. Plan the gaps as deliberately as the coverage: a catalog that lists every service but misses the operating systems, licensed desktop software and vendor-hosted tools will fail the test even if its entries are well formed.
Mapping CIS Safeguard 2.1 and NIST CSF ID.AM-02 to catalog capabilities
This table compares each inventory requirement in CIS Safeguard 2.1 and NIST CSF ID.AM-02 with the Backstage Software Catalog feature that can hold the evidence, the configuration that makes it usable, and the gap that other sources must cover. Read each row as a design decision for your catalog model. The main takeaway is that the catalog handles titles, owners and currency well, while publisher, first-use dates and the six-month review need added fields or a separate process.
| Requirement | Backstage capability | Configuration needed | Gap to close |
|---|---|---|---|
| CIS 2.1: title and business purpose | Component metadata title and description fields | Require a business purpose sentence in the description through a software template | Quality depends on owners writing a meaningful purpose, so review entries during onboarding |
| CIS 2.1: publisher | No dedicated publisher field for third-party software | Add a custom annotation or template parameter for the vendor or publisher name | Publisher is not captured by default and must be added for each purchased or open-source product |
| CIS 2.1: date of first installation or use | No native field; the Git history of the descriptor file records when an entry was added | Record installation date in a custom annotation sourced from deployment records | Git dates show catalog entry creation, not first use, so confirm the source with your deployment team |
| CIS 2.1: review at least twice a year | Owner and lifecycle fields show who is accountable and whether the entry is active or deprecated | Set lifecycle values, assign an owner to every entry and schedule owner attestations | Backstage does not track a last-reviewed date natively, so the review cycle runs outside the catalog |
| NIST CSF ID.AM-02: current software, services and systems | Entities ingested from source control update when descriptors change, and deprecated entries stay visible | Set up source-based ingestion and orphan handling so removed descriptors are flagged | Software installed without a descriptor in source control will not appear in the catalog |
| Software, services and systems scope | Component, API, Resource and System entities with dependsOn and system relations | Model each service as a component, its dependencies as resources, and group them into systems | Hardware, endpoints and network devices are outside the catalog unless a separate source feeds them in |
| CIS v8.1 asset class mapping | Software asset class maps naturally to components and APIs in the catalog | Confirm in the Controls Assessment Specification which asset class and function apply to Safeguard 2.1 | Devices, data and documentation assets need other inventories, which the catalog does not replace |
How catalog components, APIs and resources model software and systems
The Software Catalog is a core built-in feature of Backstage, listed in the architecture overview alongside Software Templates and TechDocs, and Backstage is licensed under Apache-2.0 with no paid edition from the project itself. For an inventory, the practical question is which entity kind represents each thing you need to account for. Components fit deployable software such as services, websites and libraries. APIs describe interfaces that components provide or consume. Resources cover infrastructure a component depends on, such as databases, storage buckets or message queues. Systems group related components, APIs and resources into a business-level unit, and owners (users and groups) carry accountability for each. Confirm the exact kinds, relation types and spec fields supported by your Backstage version before you write a descriptor standard, because the catalog model evolves between releases.
The main design decision is granularity. Make one component per independently deployed or independently owned unit, and group those into a system when a business service is made of several of them. A single monolith with one pipeline is usually one component. A payments service that runs an API, a worker and a database is usually one system with a component for each runtime piece and a resource for the database. (Illustrative.) Ask two questions for each candidate: would someone need to patch, retire or report on it separately, and does it have its own owner? If both answers are yes, it should be its own entry. Record the software title, publisher and business purpose in the descriptor's description, tags or annotations, because the Software Catalog's default fields do not map one-to-one to the fields CIS Safeguard 2.1 lists, and you will need a convention for the rest.
Plan the descriptor standard before ingestion, not after. Agree which annotations are mandatory, who approves a new kind of entry, and how you will handle third-party software that has no repository, such as a commercial product or a vendor appliance. Those items often need a resource or component entry with a manually maintained owner rather than a discovered one. Test the model on a sample of 20 to 30 systems from different teams before you roll it out, and check that each entry resolves to a named owner and a system. The model you settle on here determines what the evidence in later sections can show, so treat it as a design artifact that your architecture review signs off.
Which CIS Safeguard 2.1 fields the catalog can hold
CIS Safeguard 2.1 asks each software inventory entry to carry a title, publisher, business purpose, date of first installation or use, and a review cadence. The Backstage catalog covers some of these from data that already exists, while others need annotations or a process your team owns.
Title and identity
The entity metadata.name and metadata.title hold the software title, and metadata.description can carry a short statement of what it is. Because these come from the descriptor file in the component's repository, they stay current as long as the file is maintained alongside the code. Check that every software entry is a Component, API or Resource with a stable name, so the inventory does not show duplicate or renamed records for the same product.
Publisher and vendor
Backstage has no built-in publisher field for components. For commercial or third-party software, add a custom annotation or a tag that records the vendor, and set it on each entity that wraps purchased or open-source code. For internally built software, the publisher is your organization, so the owning team and spec.owner can answer the question. Confirm with procurement which name format they use so the value matches your asset register.
Business purpose
The catalog holds purpose in metadata.description, spec.system and the owning spec.owner group, which together show what the software supports and who answers for it. These fields are written by people, so they need manual entry or a template default. Review purpose text when a system changes scope, because a free-text description written at onboarding often stops matching how the software is used.
Date of first installation or use
No standard catalog field records when software was first installed or used. Add a custom annotation, for example one set by the template that creates the entity, and record the date from the change ticket or deployment record. For software created outside a template, the Git history of the descriptor file gives a fallback date, but it reflects when the entry was added, not when the software was first used. Note which source you rely on.
Review cadence and last review
CIS expects the inventory to be reviewed and updated at least twice a year. Backstage does not enforce a review date, so record the last review date and the cadence as custom annotations, then build a report or scheduled check that lists entities past their review date. Assign the review to the owning group so the catalog shows who must act when an entry goes stale. Confirm with your auditor how they want review evidence retained.
Configuring the catalog for an inventory evidence trail
This sequence turns the Backstage catalog into a software, service and system inventory that records the fields CIS Safeguard 2.1 expects and can be reviewed on a fixed cycle. Each step ends with a check you can show an assessor. Confirm option names and defaults against the Backstage version you run.
Define the entity model and required fields
The inventory owner and the platform team agree which Backstage kinds hold each inventory item: Component for software, API for interfaces, Resource for infrastructure such as databases, and System or Domain for grouping. For each kind, list the fields the inventory must carry: title, publisher or owner, business purpose, and date of first installation or use. Write this as a short field specification in your repository. Done when every inventory field maps to a descriptor field or an annotation, and any field with no home is listed as a known gap.
Assign an authoritative source for each field
For each field, record where the true value lives: the source control platform for repository and build data, the identity directory for owner groups, the CMDB or procurement record for business purpose, and a named human for anything that only a person can state. Entries pulled from a system of record should not be edited by hand in the descriptor, so drift is visible. The output is a source-of-truth table kept alongside the field specification, which an assessor can use to trace each value back to its origin.
Set ownership and lifecycle values
Set spec.owner on every entity to a group, not an individual, so ownership survives staff changes. Set spec.lifecycle to values your organization defines, such as experimental, production or deprecated, and document what each value means. Retired items should move to deprecated rather than being deleted, so the historical record stays intact. Confirm in your version which lifecycle values the catalog schema accepts. Done when a catalog query returns no entity without an owner and lifecycle.
Configure ingestion from source control
Configure the source control integration so catalog-info.yaml files in repositories are discovered and registered automatically. Use the GitHub, GitLab or other provider your organization runs, and confirm the discovery location and refresh behavior in the integration docs for your version. Add the descriptor file to repository templates so new software registers at creation. Done when a sample repository change appears in the catalog without a manual import, and entities that lose their descriptor are flagged rather than silently kept.
Add discovery providers for systems outside source control
Where software or infrastructure exists without a repository, such as vendor applications or cloud resources, add entity providers that read from the system that already tracks them. Keep each provider's output labeled with an annotation naming its source, so the catalog shows where each record came from. Confirm which providers your version supports and whether they require credentials scoped to read-only access. Done when each non-repository item in the inventory shows its source annotation and the provider's last successful run is visible.
Set up the semiannual review workflow
CIS Safeguard 2.1 calls for the inventory to be reviewed and updated at least twice a year. Name a reviewer for each owning group, record the review date in an annotation or a dedicated review entity, and schedule a recurring reminder outside Backstage, such as a calendar or ticketing task. Each review checks owner, lifecycle, purpose and first-use date, and confirms or corrects them. Done when every entity has a review record and the reviewer list is signed off by the inventory owner.
Export the inventory as dated evidence
Export the catalog entity list on a fixed schedule, using the catalog API or a scripted query, and store each export with a timestamp and the reviewer's sign-off. Include the field specification and source-of-truth table so the export can be interpreted later. Keep prior exports so changes between reviews can be shown. Confirm the export format your team can reliably produce in your version. Done when an assessor can pick any inventory item and trace its owner, purpose and review history from the exported files.
Keeping the inventory current against the six-month review rule
CIS Safeguard 2.1 expects the software inventory to be reviewed and updated at least twice a year, and NIST CSF 2.0 ID.AM-02 expects the inventory to stay current between those reviews. The two work together. The six-month rule sets a floor for formal review, while ID.AM-02 asks whether the inventory is accurate on the day an auditor reads it. A catalog that was correct at the last review but has drifted since will fail the second test even if it passes the first. Confirm your own review cadence in writing, and set it at or above the twice-a-year minimum so the review record itself is never the weak point.
Catalog ingestion from source is what keeps drift small between reviews. Component descriptors held in Git repositories are read by the catalog, so a new service, a renamed system or a changed owner appears when the descriptor changes rather than when someone remembers to update a spreadsheet. Ingestion does not remove the need for review, though. Entries for retired services, repositories that were archived without a descriptor change, and components registered by hand can sit in the catalog unchanged for a long time. Teams should decide how orphaned or unowned entries are flagged and who acts on them, and confirm how your chosen entity providers and processors report entities that no longer have a source.
A stale entry still needs an owner to confirm it, because the catalog cannot judge whether software is still in use for its stated business purpose. A review record should show the review date, the reviewer, the scope reviewed, the entries confirmed, changed or retired, and the follow-up for any entry the owner could not confirm. It should also keep the CIS fields that ingestion does not supply, such as the date of first installation or use and the publisher, which may need to be recorded as annotations or in a linked document. Keep prior review records, since an auditor will ask how the inventory was maintained across periods, not only what it shows today.
Evidence the catalog produces and how to keep it
The catalog generates several kinds of records that an assessor may ask to see for CIS Safeguard 2.1 and NIST CSF ID.AM-02. Each one shows a different part of the inventory, and each needs its own retention approach and a named owner outside Backstage.
Exported catalog snapshots
A snapshot is a dated export of the Software Catalog showing every component, API and resource with its title, owner and lifecycle. It shows what the inventory contained on a given day, which matters when the auditor asks about the state of the inventory at the start of the review period. Export on a fixed schedule through the catalog API or a scripted read, store the files in write-once storage, and record who ran the export. Check that the export includes fields for publisher and first use, because the default entity model does not hold those values unless you add them as annotations.
Ownership records
Every catalog entry should name an owner, and the owner field is the record that shows who is accountable for the software's purpose and review. Auditors often sample entries and ask whether the owner still works in the role. Backstage stores the reference but does not confirm employment, so ownership evidence depends on an HR or identity source. Keep a periodic report of entries whose owner group has no members or whose owner cannot be resolved, and retain each report with the sign-off that acted on it.
Change history from Git descriptors
When catalog descriptors (catalog-info.yaml files) live in source control, the commit history shows when an entry was added, changed or removed and by whom. This supports the claim that the inventory is kept current. Confirm that protected branches require review for descriptor changes, and that your Git platform retains the history for the full review period. Descriptors edited only through the Backstage UI may not leave a commit trail, so check how your deployment writes those edits before relying on Git as the change record.
Six-month review sign-offs
The CIS Safeguard 2.1 review interval is at least twice a year. Backstage does not run that review for you, so the evidence is a dated record that a named person checked the exported inventory against the environment and approved changes. Put the review in a ticket or change record, attach the snapshot it used, and list the entries added, updated or retired. Confirm the review cadence with your own risk owner, since the interval is a minimum set by the Safeguard and your policy may be stricter.
Ingestion and processing logs
Catalog entries arrive through providers and processors that read from source control or other systems. Their logs show which sources were read, when, and whether entries failed to load. An assessor may ask how you know the inventory reflects the repositories that exist. Retain the backend logs for the ingestion window and compare the list of discovered repositories with the source platform's own inventory on a schedule. Log retention and forwarding are set in your own logging stack, so confirm the retention period with your logging owner before promising it.
Questions buyers ask before adding a catalog to their inventory
Does a Backstage catalog alone satisfy CIS Control 2 or NIST CSF ID.AM-02?
No. The catalog is one input to a software inventory, not the inventory itself. CIS Safeguard 2.1 asks for each software entry to carry a title, publisher, business purpose and date of first installation or use, and for the inventory to be reviewed and updated at least twice a year. NIST CSF 2.0 ID.AM-02 asks that inventories of the software, services and systems you manage are kept current. A catalog holds services, APIs, systems and resources well, but it rarely records every installed application, endpoint package or SaaS tenant on its own. You will usually need discovery data from endpoint, cloud and identity tools, plus a documented review process that shows the inventory is maintained. Confirm the exact evidence expectations with your assessor before you rely on any single source.
What drives the effort and cost of building a catalog inventory?
The main drivers are the number of entities in scope, how many source systems feed the catalog, how the review process is designed, and how many owners must be assigned and trained. Scope matters most: a few hundred services in one Git organization is a different job from thousands of components across several platforms. Each additional source, such as a Git host, cloud account or identity directory, adds integration and testing work. Owner assignment is often the slowest step because it depends on people outside IT agreeing to be accountable. Ask any provider for a quote that lists these items separately, states which parts are one-time (design, integration, initial data cleanup) and which recur (review cycles, source maintenance, upgrades), and names who performs each task.
How long does it take to set up a catalog as a software inventory?
The duration depends on the scope of entities, the number of sources, the state of your existing records and how quickly owners respond. A portal limited to one team's repositories can move quickly, while an enterprise-wide inventory with several identity and cloud sources takes longer because each source needs mapping, testing and sign-off. Existing data quality is a frequent source of delay: stale service records, duplicate names and missing owners all need cleanup before the inventory can pass review. DeployOpen scopes these items in writing before work starts, and the agreed timeline follows from that scope. Ask for a plan that lists milestones, the owner-assignment step and the first review cycle.
What do our teams need to provide for an inventory project?
Your teams provide access, decisions and ownership. Typical needs include administrator access to the Git platform and identity directory, read access to cloud or CMDB sources you want to feed the catalog, a named owner for each system or group of components, and a decision-maker who approves the descriptor fields and review cadence. Security or compliance staff should confirm which fields the assessor expects, such as the CIS Safeguard 2.1 attributes, and where those fields will come from. Plan time for owners to review their entries, because a catalog that nobody confirms will drift. Confirm access requirements and approval workflows early, since they often determine the schedule.
Can our own engineers build and run this inventory without a partner?
Yes, many teams do, provided they have Backstage experience, time to design the descriptor model and a clear owner for the review process. The work splits into design (entity types, required annotations, ownership rules), ingestion (connecting sources and handling orphaned entries), and operations (review cycles, upgrades and evidence exports). An internal team usually struggles with the design and evidence stages because they require agreement across security, compliance and engineering. A partner can take on part or all of this under a fixed-scope agreement, and ongoing upgrades or reviews can be covered by a retainer. Decide which parts you will own before comparing options.
Does CIS or NIST certify an inventory built this way?
No. NIST states that it does not offer certifications or endorsements of CSF-related products, implementations or services and has no plans for a conformity assessment program. CIS states that the Controls do not replace any regulatory, compliance or authorization scheme. CIS Controls Accreditation applies to CIS SecureSuite member organizations that provide implementation, auditing or assessment services, not to inventories as outputs. Any assurance over your inventory comes from your own assessment or an independent auditor you engage. DeployOpen prepares systems, controls and evidence for those assessments but does not issue audit reports, attestations or certifications.
How does the six-month review rule apply to a catalog?
CIS Safeguard 2.1 expects the software inventory to be reviewed and updated at least twice a year. A catalog helps by making entries visible to owners, but it does not run the review by itself. Set a recurring task that checks owners, lifecycle status and missing fields, and record the outcome, such as a dated export or a signed review note. Entities that stop receiving updates from their source should be flagged for owner review rather than silently left in place. Confirm with your assessor how they want review dates and reviewer sign-off evidenced.
How DeployOpen scopes and delivers inventory configuration and evidence
DeployOpen plans, builds and hands over a Backstage software catalog that serves as your software, service and system inventory, with the fields CIS Safeguard 2.1 and NIST CSF ID.AM-02 call for. We work inside your own infrastructure and agree the scope, deliverables and review process in writing before any build starts.
How we scope
- Confirm which software, services and systems the inventory must cover, and which CIS Controls and NIST CSF outcomes it supports.
- Agree the catalog kinds, owner fields and annotations needed for title, publisher, business purpose and first use.
- Document the six-month review cadence, owners and sign-off steps in the written scope before work starts.
How we build
- Configure catalog descriptors and ingestion from your source control and identity directory in your own environment.
- Test that entries are complete, owners resolve to real users and stale entries are flagged for follow-up.
- Map each catalog field to the Safeguard 2.1 expectation and record gaps that the catalog cannot fill.
How we hand over
- Deliver a runbook covering catalog ownership, the review procedure and how to export inventory evidence for auditors.
- Document the field mapping, known gaps and the assessment steps your own team or auditor should confirm.
- Train the named owners who will maintain entries and answer review questions after handover.
How we support
- Offer ongoing support, upgrades and continuous testing of the catalog as a retainer, separate from the fixed-scope build.
- Keep the Backstage deployment current with planned upgrades, tracked against the project's release and versioning policy.
- Confirm with you which evidence requests, review cycles and audit timelines a retainer should cover before it starts.
