Skip to content
Insights + News/Newsroom + Press

Ensono Acquires Leading UK-based Hybrid IT Services Provider Attenda

Ensono announced today it has acquired Attenda, a leading UK-based pure-play provider of critical applications and hybrid IT managed services. The addition of Attenda to the Ensono family extends the company’s reach to support its clients’ global operations, and strengthens its offerings across public cloud, dedicated infrastructure and mainframe to meet the demands of its growing global client base. Ensono is owned by Charlesbank Capital Partners and M/C Partners, which acquired the company in 2015.

Founded in 1997, Attenda grew to become one of the UK’s leading managed services and cloud service providers, specializing in running business-critical applications. The company combines business outcome focus, a structured client engagement methodology, and a comprehensive critical application and hybrid IT managed services portfolio. Attenda’s clients operate in a wide range of markets including financial services, media, business services and retail.

“Ensono’s expertise in managing mission-critical operations, coupled with the standardized platforms and services of Attenda in managed public and private cloud, helps accelerate Ensono’s strategy to enable its clients to operate seamlessly across multiple environments,” said Jeff VonDeylen, CEO of Ensono. “Ensono and Attenda provide complementary service offerings, but also share a similar ‘client-first’ management philosophy and commitment to investing in the ongoing success of our employees. With the integration of Attenda’s experience, capabilities and facilities, I believe partnering with Ensono becomes an even more compelling option for CIOs around the world.”

VonDeylen will lead the combined company. Mark Fowle, co-founder and CEO of Attenda, will join the Ensono Board of Directors and work to ensure a smooth transition and continued support with client relationships and strategic direction.

“Ensono is aligned with our belief that scale and reach are increasingly important characteristics for service providers who target mid- to large-sized enterprises, and is committed to supporting our goal of providing the best possible solutions for the myriad of complex and rapidly evolving IT challenges that our clients face,” said Fowle. “Ensono understands these needs, and the combined organization will be unparalleled in respect of its scale, financial strength, focus, quality and service breadth, all of which are necessary to provide clients with the solutions they need to advance their business objectives – regardless of platform or location.”

Throughout the transaction, Arma Partners acted as the exclusive financial advisor to Attenda with legal counsel provided by Travers Smith LLP. Webster Bank, N.A. is acting as Administrative Agent, Joint Bookrunner and Joint Lead Arranger for the financing.  NewStar Financial, Inc. is acting as Joint Lead Arranger and TD Securities (USA) LLC is acting as Syndication Agent for the financing. Legal counsel for Ensono was provided by Ropes & Gray LLP and Goodwin Procter LLP.

About Ensono
Ensono collaborates with clients to deliver progressive IT solutions to help them operate their infrastructure for today and optimize it for tomorrow. We specialize in supporting mission-critical workloads for the world’s most successful companies. Ensono works across all platforms – mainframe to cloud, and everything in between. We are ranked by Information Week 500 for our technology innovation and by the Uptime Institute for 100% availability. Ensono has over 700 associates and is headquartered in greater Chicago, Ill. Visit us at

About Attenda Limited
Attenda Limited is the number one pure-play UK critical applications and hybrid IT managed services provider, specializing in running business-critical applications. Attenda’s business-critical IT approach combines business outcome focus with a structured engagement methodology and a comprehensive critical application and hybrid IT managed services portfolio.

Through an understanding of client needs, Attenda provides independent advice to facilitate the right choices, modernizing IT estates through the delivery of platform and location independent managed services that align to business outcomes. Attenda’s continual governance of these IT services enables clients to focus on their business strategy, driving innovation and enhancing stakeholder value.

Attenda has been recognised by Gartner in its Magic Quadrants for the last three years, and the company is ranked 19th in The Sunday Times 100 Best Companies to Work For 2016. The company carries a rich array of industry accreditations including ISO9001, ISO27001, ISO20000 and ISO22301, and partner accreditations with Microsoft, AWS, VMware and SAP, plus others.
# # #

For media inquiries, please contact Beth Burghgraef at: [email protected].

Don't miss the latest from Ensono


Keep up with Ensono

Innovation never stops, and we support you at every stage. From infrastructure-as-a-service advances to upcoming webinars, explore our news here.

Start your digital transformation today.