arrow_forward Back to Full Solution Provider List


Calero-MDSL is a leading provider of Technology Expense Management solutions designed to provide clarity, control, compliance, and cost savings. With a deep commitment to innovation and customer service, Calero-MDSL partners with enterprises to provide a unified expense management service that supports Telecom Expense Management, Managed Mobility Services, and SaaS Subscription Management. Calero-MDSL has thousands of customers worldwide, including corporations, universities, financial institutions, and government agencies.

Products & Services

  • Managed Mobility Services (MMS)
  • SaaS
  • Telecom
  • Market Data Management
  • Software Subscription Management
  • TrueSense™
  • TrueInsight™

Industries Served

  • All Industries

Clients Include

  • Alight Solutions
  • IWG
  • The Scottish Government
  • Penn State
  • Expedia
  • Airbus
  • City of Dallas
  • Phillips

Client Testimonials

“We would not have got here without the Calero-MDSL team and want to recognize their efforts in helping us achieve a successful go-live.”

- Rob Kordek, Director of Network Architecture, Alight

“We chose Calero-MDSL because they successfully demonstrated to us their extensive knowledge of Global telecom providers, contracts and billing. They go the ‘extra mile’ for their customers and the customer is always first.”

- Patrick O'Brien, Head of Telecoms Centre of Excellence, Danfoss

“My management team was very pleased to see the volume of savings we have booked into the system and thanks for all your efforts to drive many outstanding items to a close, it truly helps me to show the value of the service.”

- Gary Fortune, Global Mobility Manager, SAP

“One of the greatest values is that I have a very accurate picture of all the services we provide to various departments.”

- Chris Magill, George Washington University
Calero-MDSL | Quartz Events Quartz Events

Quartz Events is the fastest growing producer of invitation-only, executive summits in North America. We help leaders get things done.

Quartz Events is now Quartz Network!

Exciting news! All of our executive tools and services are now available under one roof. Quartz Network now includes Quartz Events, our industry-leading executive summits, Quartz Education, our on-demand peer-led content, and Quartz Network Solutions, our streamlined B2B solution-finding platform.