The Total Cost of Ownership (TCO) model for Adobe Commerce that gets presented to a CFO almost always understates the actual cost of running the platform. The licensing line is correct, the implementation line is roughly correct, and then a series of operational line items are either missing or sized too small. By year two, the actual spend has drifted twenty to forty percent above the model, and the conversation about why becomes uncomfortable. The fix is to build a more honest TCO model up front — one that includes the categories that get left out — so that the budget conversation is grounded in reality from the start.
This piece walks through the line items most Adobe Commerce TCO models leave out. It is written for private equity portfolio operators, CFOs evaluating platform investments, and the merchants preparing platform budgets for board approval. The patterns below come from Bemeir’s work with merchants on both the buy side (evaluating Adobe Commerce as a platform decision) and the operate side (running Adobe Commerce in production for years).
What a Typical TCO Model Includes
A standard Adobe Commerce TCO model includes:
- Adobe Commerce licensing (for Adobe Commerce, not Magento Open Source)
- Initial implementation cost (agency build, internal staff time)
- Hosting cost (Adobe Commerce Cloud or self-managed)
- Annual maintenance retainer
- Standard third-party tools (search, analytics, payment processing)
These line items are visible during the procurement process and tend to be sized roughly correctly. They typically represent 60-75% of the actual three-year cost.
The other 25-40% is in line items that get missed.
The Missing Categories
The categories that consistently get missed:
- Performance engineering beyond launch
- Security posture maintenance beyond the SLA
- Integration maintenance over time
- Custom code maintenance
- Talent investment beyond the agency
- Content operations and merchandising tooling
- Compliance and accessibility ongoing work
- Contingency for platform-level changes
- Operational training and documentation
- Disaster recovery and business continuity
Each of these is real spend, and ignoring them produces budget pressure later.
Performance Engineering Beyond Launch
The launch budget includes performance work to hit Core Web Vitals targets at go-live. The ongoing budget often does not. Performance regresses for reasons unrelated to launch: new third-party tags get added, the catalog grows, traffic patterns shift, browser standards evolve, competitor performance moves the conversion baseline.
Realistic budget: $40-100k per year for a mid-market store to maintain Core Web Vitals at green, more for high-traffic or complex stores. The work is a mix of Hyvä-specific optimization, infrastructure tuning, and third-party tag discipline. Bemeir’s Hyvä performance practice treats this as a permanent budget line, because the alternative — letting performance drift and then doing a crash project later — is more expensive in total.
Security Posture Beyond the SLA
The maintenance retainer’s patching SLA covers Adobe Commerce platform patches. It does not cover:
- Third-party module security review
- Custom code security audit
- Infrastructure-level security work (firewall rules, WAF tuning, DDoS mitigation)
- Compliance audits (PCI DSS, SOC 2)
- Penetration testing
- Incident response retainer beyond patching
Realistic budget: $30-80k per year for security work beyond the patching SLA. Stores with PCI scope or under SOC 2 audit will be at the higher end. The PCI Security Standards Council documentation outlines the recurring compliance requirements.
Integration Maintenance Over Time
Integrations break. Vendor APIs change. Authentication models update. Data schemas evolve. The maintenance budget needs to cover ongoing integration work, not just the initial integration build.
Realistic budget: $50-150k per year for a mid-market B2B store with 8-15 integrations. The number scales with integration count and complexity. The work includes:
- Vendor API version upgrades
- Authentication token rotation and renewal
- Schema mapping updates when vendor data structures change
- Error handling improvements as edge cases surface
- Performance tuning as integration volume grows
| TCO Category | Typical model inclusion | Realistic annual cost for mid-market |
|---|---|---|
| Adobe Commerce license | Included | $30-50k (Adobe Commerce) |
| Adobe Commerce Cloud hosting | Included | $40-100k |
| Maintenance retainer | Included | $150-350k |
| Performance engineering | Often missing | $40-100k |
| Security beyond SLA | Often missing | $30-80k |
| Integration maintenance | Often missing | $50-150k |
| Custom code maintenance | Often missing | $30-80k |
| Talent investment | Often missing | $40-120k |
| Content operations tooling | Often missing | $30-100k |
| Compliance and accessibility | Often missing | $20-60k |
| Disaster recovery | Often missing | $20-50k |
| Contingency | Often missing | 10-15% of base |
Custom Code Maintenance
Every custom module written for a store accumulates maintenance debt. The custom checkout flow that worked perfectly in 2024 might need adjustment when Adobe Commerce updates the underlying checkout module in 2026. The custom payment integration might need rebuilding when the payment provider deprecates an API.
Realistic budget: $30-80k per year for ongoing custom code maintenance on a typical mid-market codebase. The number scales with custom code volume. Stores that resist the temptation to add custom code stay at the lower end; stores that aggressively customize everything end up at the higher end and the upper end of the range.
This is one of the strongest arguments for the Magento 1 custom module audit discipline — killing unused custom code during a migration reduces this annual line item permanently.
Talent Investment Beyond the Agency
The agency retainer doesn’t replace in-house investment. Most mid-market Adobe Commerce stores benefit from at least one in-house technical owner who understands the platform, can review agency work, and can handle small issues without escalating to the agency.
Realistic budget: $40-120k for a part-time or full-time in-house technical owner, depending on store size and complexity. The role might be a dedicated engineer, a technical product manager, or a fractional CTO. The investment pays back in better agency relationships, faster small-fix turnaround, and better decisions about scope and priorities.
Content Operations and Merchandising Tooling
Adobe Commerce ships with admin tools for catalog management, merchandising, and content. These tools are functional but not optimized for high-volume operations. Merchants running large catalogs or active merchandising programs typically add:
- A PIM (Product Information Management) tool — Akeneo, Salsify, or Pimcore
- A DAM (Digital Asset Management) tool for product imagery
- A CMS for non-product content if Adobe Commerce’s CMS is insufficient
- A merchandising automation tool
Realistic budget: $30-100k per year for the tools, plus implementation cost. The investment is high-leverage for stores whose catalog or content velocity is meaningful.
Compliance and Accessibility Ongoing Work
WCAG accessibility compliance is now table stakes, and it’s not a one-time project. The store evolves, new features ship, and accessibility regression has to be actively prevented. The same applies to privacy regulations (GDPR, CCPA), which have ongoing data-handling requirements rather than one-time setup.
Realistic budget: $20-60k per year for ongoing accessibility and compliance work. The WCAG documentation and the IAPP’s privacy resources cover the standards.
Disaster Recovery and Business Continuity
The store has to survive infrastructure failures, security incidents, and operational mistakes. The architecture for this — multi-region deployment, automated backups, runbook documentation, periodic disaster recovery drills — costs real money to build and maintain.
Realistic budget: $20-50k per year for DR work, more if the store has strict RTO/RPO requirements. Adobe Commerce Cloud documentation on backup and recovery covers the platform side.
Contingency for Platform-Level Changes
Adobe Commerce ships major version updates every 6-12 months. Each major update requires planning, testing, and migration work. The annual TCO should include budget for these updates rather than treating them as one-time projects.
Realistic budget: 10-15% of base operating cost as contingency for platform-level changes. This includes major version updates, Hyvä major version updates, infrastructure platform changes, and unplanned but necessary work.
What This Looks Like in Total
For a typical mid-market Adobe Commerce store ($30-80M online revenue, B2B with some DTC), the realistic annual operating cost is:
- Base costs (license, hosting, retainer): $250-500k per year
- Often-missed categories: $250-600k per year
- Total: $500k-$1.1M per year
The “often-missed” categories often equal the base costs, which is why TCO models that exclude them under-predict by half.
How to Build an Honest TCO
The right approach is to build the TCO with every category included, with explicit ranges for each line item, and with a year-over-year escalation factor. The model should be:
- Itemized: every line item visible, including the ones that might get cut
- Ranged: low and high estimates for each line, not single point estimates
- Source-cited: each estimate references the basis (industry benchmarks, agency quotes, peer comparisons)
- Time-phased: three-year view at minimum, showing how spend evolves
- Sensitivity-tested: what happens if traffic grows 50%, what happens if a key integration breaks, what happens if compliance requirements change
A good TCO model becomes a working document throughout the platform’s lifecycle. The CFO checks against actual spend. Variance becomes a conversation rather than a surprise. Bemeir’s Adobe Commerce engagements often start with TCO recalibration when a portfolio operator inherits a store, because the previous owner’s TCO model rarely reflects reality.
For independent benchmarks, Forrester’s Total Economic Impact studies and Gartner’s TCO methodology documentation provide frameworks for thinking about platform TCO. These resources confirm what experienced operators already know — the platform decision is not about license cost. It’s about the total operating model, and an honest accounting of that operating model is what makes the platform investment defensible.
