Start with apps that are low-usage, poorly owned, and already outside central governance. Those tools are usually the easiest to retire and the most likely to hide stale accounts or forgotten integrations. Then move to overlapping apps that carry the most sensitive data or the widest admin access.
How to choose the first SaaS apps to remove
The fastest wins usually come from apps that have drifted furthest from active ownership and governance. Low-usage tools are easier to retire because fewer people depend on them, and weak ownership usually means there is already no clear business process defending the app. That combination also tends to expose stale accounts, forgotten integrations, and unclear data flows.
What makes one redundant app safer to remove before another?
Prioritise by retirement friction and residual exposure. An app that is lightly used, centrally invisible, and loosely governed is usually the best first candidate because you can confirm impact quickly and cut off dormant access paths. By contrast, an app with broad admin rights, sensitive records, or many connected systems can create a larger cleanup burden even if its business value is declining.
The practical test is not whether an app is technically duplicated, but whether you can prove it is non-essential with minimal blast radius. Redundancy alone is not enough to justify immediate removal if the app is still the only place certain workflows, records, or approvals exist. In that case, the app may be a migration candidate first and a removal candidate second.
How to rank apps when several look removable
Use a sequence that combines usage, ownership, governance, and exposure. First remove tools with the weakest evidence of active use, because those are the most likely to be abandoned. Next target apps whose owners cannot clearly justify continued access, support, or data retention. After that, address overlapping tools that concentrate sensitive data, admin access, or integration sprawl.
If two apps look similarly redundant, choose the one with the narrower operational footprint. A small, isolated app is easier to decommission safely than a platform embedded in finance, HR, customer support, or automation flows. That ordering reduces the chance that removal becomes an emergency migration project.
Low visibility is a strong clue, but not a decision by itself. Before disabling anything, teams should confirm whether the app still handles records, notifications, approvals, or machine-to-machine connections that users may not think of as “active” because they happen in the background.
Risk and Threat Considerations
redundant saas app often create hidden exposure long after people stop using them. The main risk is not just wasted spend, it is orphaned access, stale permissions, and forgotten integrations that can still move data or authenticate to other systems. The more poorly owned the app, the more likely it is to contain unknown data retention and weak administrative oversight.
Failure mechanism: Shadow usage, stale accounts, and inherited permissions keep the app alive operationally even when it looks obsolete, so removal planning misses dependent workflows or leaves residual access paths behind.
Impact: Teams can break business processes, lose needed records, or leave sensitive data and admin access in a place with weak governance until the retirement is fully completed.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0 and CIS Controls v8 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | ID.AM-01 — Physical Devices and Systems Inventoried | Inventorying apps and connected systems is necessary to identify redundant SaaS safely. |
| GV.OC-01 — Organizational Context Established | Retirement priority depends on business ownership and operational context. | |
| PR.AA-01 — Identities and Credentials Issued, Managed, Verified, Revoked, and Audited | Redundant SaaS often leaves behind stale accounts and residual access paths. | |
| Recommendation — Inventory every SaaS app, owner, and dependency before choosing retirement order. Tie removal decisions to documented business ownership and service context. Revoke accounts and credentials before decommissioning each retired SaaS app. | ||
| ISO/IEC 27001:2022 | A.5.9 — Inventory of information and other associated assets | App retirement requires knowing what SaaS assets and dependencies exist. |
| A.5.15 — Access control | Removing redundant SaaS must also remove access and related permissions. | |
| Recommendation — Maintain a current SaaS inventory with owners and dependencies. Remove access paths and privileges as part of each SaaS retirement. | ||
| CIS Controls v8 | CIS-5 — Account Management | Redundant SaaS can hide orphaned accounts and unused access. |
| CIS-2 — Inventory and Control of Software Assets | Deciding what to remove first depends on software inventory and ownership clarity. | |
| Recommendation — Disable orphaned accounts and remove unused access before shutting down the app. Track SaaS inventory and ownership so redundant apps can be retired in order. | ||
Practitioner Guidance
What to prioritise: Start with the app that combines low use, unclear ownership, and the weakest governance evidence. That is usually the cleanest retirement candidate and the fastest way to reduce audit and access-management noise.
What to verify: Confirm whether each app still receives logins, API calls, notifications, exports, or admin actions from any dependent system. A quiet interface can still be business critical if it supports background workflows.
Decision rule: If an app stores sensitive data or has broad admin access, treat it as a higher-risk decommissioning project even when usage is low. In that case, sequence it after a dependency review and a data-migration plan.
Practitioner takeaway: The best first removal candidate is the app whose business value is easiest to challenge and whose technical and governance footprint is easiest to unwind without surprises.
Related resources from NHI Mgmt Group
- How can security teams decide which SaaS apps need tighter access and lifecycle controls first?
- How do IAM and IGA teams decide which SaaS apps need lifecycle automation first?
- How should security teams decide whether to encourage social logins for third-party SaaS apps?
- How should security teams decide which SaaS data to collect in the first place?