How to Build a Managed EDR Business Case

A managed EDR business case should compare the organization's verified current operating cost and coverage gaps with the proposed service's cost, scope, retained work, and measurable benefits. It should not depend on a universal return figure or treat an avoided incident as guaranteed savings.

Start with the EDR pillar guide if decision-makers need a plain-language capability overview.

Executive decision summary

A decision-maker should be able to understand the request without reading the full technical assessment. Put this table on the first page of the approval pack and replace each instruction with verified information.

Decision field	What to enter
Approval requested	Contract amount, term, onboarding, licences, and contingency
Business scope	Users, client devices, servers, locations, and required monitoring hours
Current operating gap	An observed coverage, staffing, investigation, or response problem
Proposed change	Duties the provider will assume and the technology it will operate
Customer-retained work	Deployment, business context, approvals, remediation, recovery, and governance
Financial effect	Current annual cost, proposed year-one cost, later-year cost, and incremental amount
Measurable benefit	Coverage, monitored hours, investigation ownership, containment testing, or released internal capacity
Main risks	Compatibility, provider dependency, exclusions, data handling, approval delay, and exit
Approval conditions	Pilot acceptance, contract changes, implementation owners, and review dates

The recommendation should state whether the proposal lowers cost, adds capability at a higher cost, or changes the operating risk without a certain cash return. That distinction gives finance and leadership an honest basis for approval.

State the decision clearly

Define what approval is being requested: product licences, a managed service, onboarding, a contract term, or a pilot. Identify the devices, business units, and service hours in scope.

Then state the current problem in observable terms. Examples include alerts that are not reviewed during certain hours, unclear containment ownership, incomplete device coverage, or excessive internal time spent on initial triage. Avoid vague claims that cannot be tested.

Compare the operating options

Compare the proposed service with realistic alternatives, including maintaining the current state. Use the same devices, operating hours, response duties, retention, and contract period for every option.

Decision area	Maintain current state	Operate EDR internally	Use managed EDR
Endpoint technology	Current product and known coverage	EDR licences selected and administered by the internal team	Product supplied or supported under the provider's service
Monitoring	Current staffed hours and unowned periods	Internal analysts or assigned IT staff cover the required schedule	Provider covers the contracted schedule; customer handles defined handoffs
Investigation	Current evidence, skills, and escalation path	Internal team investigates endpoint activity and related systems	Provider investigates covered telemetry and escalates under the service description
Containment	Current authority and technical access	Internal responders act under company policy	Provider recommends or performs only the actions authorized in writing
Internal work	Existing administration and incident workload	Deployment, policy, triage, tuning, on-call, reporting, and response	Deployment support, business context, approvals, remediation, recovery, and provider oversight
Cost record	Existing invoices, labour, specialist help, and known gaps	Licences, implementation, staffing, on-call coverage, training, tools, retention, and management	Service, onboarding, retained labour, integrations, additional incident work, and exit
Main limitation	Known gaps remain unresolved	Coverage depends on internal capacity and continuity	Coverage depends on contract scope, provider performance, customer response, and healthy sensors

An internal EDR option should not assume that existing IT staff can absorb continuous monitoring at no cost. Estimate the work required for sensor health, alert triage, investigation, tuning, escalation, exercises, reporting, leave coverage, and after-hours duty. Use the organization's own staffing and planning rates rather than a generic security-analyst salary.

The managed option should not assume that the provider takes every incident duty. Map monitoring, investigation, endpoint containment, identity action, remediation, recovery, communications, legal and privacy assessment, and risk acceptance to named owners. Use managed EDR vs. in-house EDR for the detailed responsibility comparison.

Build the current-state baseline

Use your own records to estimate:

• current endpoint software and support cost;
• employee time for administration, alert review, investigation, reporting, and vendor coordination;
• outside incident-response or specialist support;
• endpoint coverage and reporting gaps;
• time spent reimaging or restoring devices after security events; and
• known costs of tools or processes the proposal would replace.

Mark uncertain inputs and show the source and period for each one. Do not assign a certain dollar value to an incident that may never occur.

Separate three categories: cash cost shown by an invoice or quote, internal capacity estimated from recorded time, and risk reduction that cannot be treated as certain savings. This keeps a useful control benefit from becoming an unsupported financial promise.

Calculate the proposed cost

Cost or effort	Current state	Proposed state	Evidence or assumption
Software licences			Invoice or quote
Managed monitoring and investigation			Service description and quote
Onboarding and migration			Statement of work
Data retention and integrations			Product and contract details
Internal administration			Role and time estimate
Incident coordination and recovery			Retained responsibility estimate
Contract exit or transition			Contract terms

Normalize every quote to the same inventory, service hours, responsibilities, contract period, currency, and tax treatment before entering it in this table.

A hypothetical worked example

Assume a fictional 60-person business has 75 client devices and five servers. Its current endpoint software costs CAD $6,000 per year. IT records about 25 hours each month on agent administration, alert review, basic investigation, and reporting. Using an internal planning rate of CAD $65 per hour, that is CAD $19,500 of annual allocated time.

The current-state amount used for comparison is:

CAD $6,000 software + (25 hours × CAD $65 × 12 months) = CAD $25,500 per year

A proposed managed EDR service costs CAD $24,000 per year, with CAD $4,000 one-time onboarding. The provider's responsibility matrix suggests customer work will fall to 10 hours per month for deployment support, business context, approvals, remediation, reporting review, and provider governance.

Year-one proposed cost is:

CAD $24,000 service + CAD $4,000 onboarding + (10 hours × CAD $65 × 12 months) = CAD $35,800

Later-year cost before renewal changes is:

CAD $24,000 service + (10 hours × CAD $65 × 12 months) = CAD $31,800

On these assumptions, the proposal does not produce direct annual cash savings. It costs CAD $10,300 more in year one and CAD $6,300 more in a later year than the modeled current state. The case must therefore justify the additional spend through verified coverage improvements, monitored hours, investigation ownership, tested containment, better evidence, or capacity released for named IT work. It should not force a positive ROI by assigning a guaranteed avoided-breach value.

These numbers are fictional and do not represent a Quantm price, customer result, or industry benchmark.

Describe benefits that can be checked

Useful benefit measures may include the share of in-scope devices reporting, monitored service hours, alert investigation ownership, escalation evidence, test containment completion, reporting quality, and internal time released from defined tasks.

These are operating improvements. They do not prove that every incident will be prevented or contained. If the proposal uses a commissioned study or vendor estimate, label its source and do not substitute it for your own baseline.

Tie each proposed benefit to a baseline and target:

Measure	Current evidence	Proposed target	Verification
Healthy in-scope endpoints	Inventory-to-console reconciliation	Approved coverage target by device class	Monthly reconciliation and exception review
Monitoring hours	Current staffed schedule	Contracted human review window	Controlled after-hours alert and service report
Investigation ownership	Current responsibility map	Named provider and customer stages	Sample case and RACI review
Containment readiness	Last exercise or “not tested”	Tested authority by device class	Isolation and release record
Internal capacity	Recorded monthly time	Expected retained hours	Time sample at 30, 90, and 180 days
Reporting evidence	Current report or gap	Agreed coverage, case, timing, and action report	Service review minutes and open-action log

Show more than one scenario

Prepare a conservative, expected, and higher-demand scenario. Vary uncertain inputs such as device growth, internal time released, onboarding effort, and additional incident support. Keep the service price and inclusions tied to the written quote.

For the fictional example:

Scenario	Retained customer time	Extra first-year services	Year-one modeled cost
Expected	10 hours/month	CAD $0	CAD $35,800
Conservative	15 hours/month	CAD $5,000	CAD $44,700
Lower internal effort	6 hours/month	CAD $0	CAD $32,680

The conservative calculation is CAD $24,000 + CAD $4,000 + CAD $5,000 + (15 × CAD $65 × 12). The lower-effort scenario changes only the retained time. Add device growth, exchange-rate exposure, price escalation, server counts, and incident-service use when they are material.

If leadership requests a return calculation, a common structure is:

(quantified benefit minus total proposed cost) divided by total proposed cost

The formula is only as reliable as its inputs. Show excluded benefits and costs, and keep risk reduction separate from certain cash savings.

Payback is appropriate only when the proposal creates a measured cash or capacity benefit larger than its incremental cost. If the main case is risk treatment and coverage, state that directly and let decision-makers compare the control improvement with the added cost.

Include risks and retained responsibilities

Record product compatibility, provider dependency, data handling, service exclusions, customer approval delays, transition risk, and exit requirements. State who still owns recovery, business communications, legal decisions, and risk acceptance.

Use the managed EDR SLA checklist to test proposed commitments and contract evidence.

Define approval and review evidence

The final decision pack should include the baseline, inventory, requirements, shortlisted options, quote comparison, pilot evidence, implementation plan, risks, assumptions, success measures, and named owners. Set a post-onboarding review and a renewal review before signing.

A disciplined business case does not promise certainty. It shows what is known, what is assumed, what will change, and how the organization will verify the result.

Copyable business-case outline

1. Decision requested and approval amount.
2. In-scope users, devices, servers, locations, and service hours.
3. Current tools, costs, hours, coverage, and observed gaps.
4. Options considered, including maintain-current-state and in-house operation.
5. Proposed product, service duties, customer duties, and exclusions.
6. One-time, recurring, internal, growth, and exit costs.
7. Quantified operating benefits and unquantified risk benefits.
8. Expected, conservative, and alternative scenarios.
9. Pilot evidence, implementation plan, dependencies, and risks.
10. Success measures, review dates, renewal criteria, and owners.

Need help building a decision-ready endpoint security case? Talk to Quantm.