ZealiD provides organisations and individuals with a qualified eSignature that can be used to prove identity across the EU and globally.
It is accepted by all public authorities across the EU and is the first organisation in the world to offer these services as a mobile app that currently works in 26 countries and 21 languages, according to the company.
"As a hyper-growth company in the fast-moving digital identity market that demands exceptionally secure and complex solutions, it was imperative that we found a partner which could not only support our ambitious plans, but could match our commitment to security," said Philip Hallenborg, founder and CEO of ZealiD.
"With DigiPlex we are assured of the physical security protecting our servers and have a clear path to expand as our business grows."
The company revealed ZealiD also meets applicable ETSI security standards, which prohibit storing data in the cloud.
Before selecting DigiPlex, ZealiD used independent security certification company Tuvit to audit its facilities.
"Security is of paramount importance to all of our customers ranging from hyperscale cloud service providers to innovative, fast-moving entrepreneurs like ZealiD," said Fredrik Jansson, CCO at DigiPlex.
"DigiPlex has, over the last 20 years, earned a strong reputation for our physical security alongside high levels of customer service. We are very pleased that ZealiD recognizes this heritage and has chosen to put its trust in us."
All DigiPlex facilities use multi-layered integrated security systems that feature overt and covert measures covering physical, technical and human defence.
The company did not share the exact specifications, labelling them as confidential but will include combinations of dual perimeter security fencing, 24/7/365 site security and manned guarding, an Access Control System with multi-factor authentication featuring biometric `Man-Trap' access portals and an advanced Closed Circuit TV surveillance system.
