Partner Ecosystem
Calero
Part of the Rubber Duck Technology partner ecosystem — vetted for capability, accountability, and fit before they ever meet a client.
About the partner
About Calero
Technology Expense Management. Reimagined.
Calero (formerly Calero-MDSL) is a global Technology Expense Management (TEM) and SaaS Management Platform (SMP) provider that manages $20B+ in annual technology spend for 3,500+ customers across 50+ countries. The company was formed by the January 2020 merger of Calero Software and MDSL — a transaction led by Oak Hill Capital and Riverside Partners (with Sumeru Equity remaining an investor) — combining TEM, managed mobility services and market-data management. Calero offers unified expense management across telecom, mobility, SaaS and cloud, with a strong Calero Cloud SaaS Management practice for shadow-IT visibility. It stresses vendor neutrality — it is not a carrier or agent — to avoid the conflicts of interest common among TEM providers.
Why teams choose Calero
- Top 3 global TEM provider
- $20B+ in annual technology spend managed
- Calero Cloud SaaS Management for shadow IT visibility
- Strong global delivery (post-MDSL acquisition)
- Riverside private equity backing
Capabilities we have validated
- $20B+ in annual technology spend managed
- Calero Cloud SaaS Management
- Strong TEM + SaaS combined platform
- Comprehensive global delivery
- Riverside private equity backing
Recognition & proof points
- Gartner MQ for TEM (multiple years)
- AOTMP recognition
- Forrester recognition
AI in the offering
AI/ML for invoice anomaly detection, contract optimization, and SaaS spend recommendations.
Profile maintained by Rubber Duck Technology research from primary sources and partner collateral · Last verified Sep 7, 2026 · High confidence · Verified multi-source.
Capabilities
Solutions Delivered by Calero
The outcomes this partner is equipped to deliver — drawn from our vetting record, not their marketing deck.
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Telecom / Tech Expense Management
Calero provides Technology Expense Management across telecom, mobility, SaaS, and cloud workloads, auditing invoices and recovering spend for 1,500+ enterprises managing over $20B in annual technology spend.
Top 3 global TEM — As a top 3 global TEM provider, Calero brings scale and depth to expense management.
$20B+ spend managed — Over $20B in annual technology spend under management demonstrates proven scale.
Global delivery — Strong global delivery, expanded post-MDSL acquisition, supports multinational programs.
Integrates with Microsoft 365ServiceNowSAP
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Mobility Lifecycle Management
Calero manages the full mobile lifecycle and mobility expense, integrating with carrier billing and MDM/UEM platforms to control device and service costs.
$20B+ spend managed — Massive spend under management gives Calero benchmarking leverage on mobility costs.
Global delivery — Global delivery supports mobility programs across multinational footprints.
Integrates with major carrier billing systemsmajor MDM/UEM platforms
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Software Licensing / Marketplace
Calero Cloud SaaS Management gives enterprises visibility into SaaS and cloud licensing, surfacing shadow IT and optimizing software spend.
Shadow IT visibility — Calero Cloud SaaS Management surfaces unmanaged SaaS for control over shadow IT.
TEM + SaaS platform — A combined TEM and SaaS management platform unifies technology spend visibility.
Integrates with Microsoft 365ServiceNowWorkday
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Professional / Advisory Services
Calero offers professional and advisory services to help enterprises optimize telecom, mobility, and SaaS programs alongside its expense management platforms.
Top 3 global TEM — Advisory draws on top-3 global TEM expertise and benchmarks.
PE-backed scale — Riverside private equity backing supports a mature, well-resourced practice.
Integrates with ServiceNowSAP
Delivery
How We Deliver
Engagement & delivery models we have validated with this partner — where the slide deck ends and the actual work begins.
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Strategy & Consulting
Calero advises enterprises on technology expense and SaaS management strategy, drawing on its position as a top 3 global TEM provider.
Delivery: Delivered as professional advisory engagements supported by global delivery teams.
$20B+ spend managed — Advice is grounded in benchmarks from over $20B in managed spend.
Top 3 global TEM — Strategy reflects top-3 global TEM market expertise.
Integrates with ServiceNow
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Assessments & Audits
Calero conducts invoice audits and spend recovery across telecom, mobility, and SaaS, identifying billing errors and savings opportunities.
Delivery: Delivered through professional services backed by audit and recovery tooling.
$20B+ spend managed — Scale of managed spend sharpens audit benchmarks and recovery.
Shadow IT visibility — SaaS management surfaces unmanaged spend during assessments.
Integrates with major carrier billing systems
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Vendor / Escalation Management
Calero manages carrier and vendor relationships, contracts, and escalations on behalf of enterprise customers to control technology spend.
Delivery: Delivered as an ongoing managed service with global delivery support.
Global delivery — Global delivery handles vendor management across regions and carriers.
Top 3 global TEM — Market scale gives Calero leverage in vendor negotiations.
Integrates with major carrier billing systems
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Implementation & Onboarding
Calero implements and onboards customers onto its TEM and SaaS management platforms, integrating with enterprise systems.
Delivery: Delivered as project-based implementation with professional services.
TEM + SaaS platform — Onboarding unifies telecom, mobility, and SaaS into one platform.
Global delivery — Global delivery supports multinational rollouts.
Integrates with Microsoft 365ServiceNow
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Migration Services
Calero migrates enterprise expense and SaaS management data and processes onto its platform, including consolidations from prior tools.
Delivery: Delivered as project-based migration engagements.
PE-backed scale — Riverside backing supports robust migration capacity.
Global delivery — Migrations are supported across global operations.
Integrates with SAPWorkday
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24/7 Support
Calero provides 24/7 support for its expense and SaaS management platforms to keep global enterprise customers running.
Delivery: Delivered as fully managed 24/7 support through global delivery teams.
Global delivery — Round-the-clock support spans global time zones.
Top 3 global TEM — Support is backed by a leading global TEM organization.
Proof
Results with this partner
Documented outcomes from real engagements — not testimonial vibes.
Case studies featuring this partner are being prepared. See all client results →
Resources
Documents & collateral
Datasheets, spec sheets, case studies and pricing references collected while vetting Calero — 9 documents.
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