Markley Group

Boston, Massachusetts, United States

Data center colocation and cloud solutions with 24x7 support

Markley Group is New England’s largest and longest operating multi-tenant, mission-critical telecommunications and data center facility. Founded in 1991, the company has developed a data center portfolio across the US and Europe, making it one of the world’s largest data center developers. Their flagship facility, One Summer Street in Boston, serves a diverse range of industries including financial services, healthcare, and technology.

Markley Group offers a comprehensive suite of services including data center colocation, high-density colocation, hybrid cloud solutions, and disaster recovery. They also provide connectivity services such as AWS Direct Connect and network services through the Markley Network Fabric. Their cloud offerings include compute, storage, and backup solutions, all supported by a 24x7 on-site staff.

The company is committed to compliance and security, maintaining certifications such as GDPR, SOC 1 Type II, SOC 2 Type II, ISO 27001, HIPAA, and PCI DSS. Markley Group has a proven track record of reliability, having never experienced a primary power outage in over 15 years of operation. Their partnerships with organizations like the Boston Red Sox highlight their dedication to providing exceptional service and reliability.

35
YEARS IN BUSINESS
8
SERVICES

Agency details

Team size
201-500 people
Founded
1991 (35 years)

About this agency on Agency List

Markley Group holds an Agency List Score of 96 out of 100.

That score is higher than 89% of the 36,920 agencies Agency List has assessed so far.

The Agency List Score measures how well an agency documents its work in public: named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than to the client.

It does not measure client satisfaction, price, or availability.

How the Agency List Score is measured

Assessment date

Agency List assessed Markley Group in September 2026, reading 6 pages published on markleygroup.com.

The score reflects what Markley Group had published by that date; anything published since has not been read.

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