Cloud
Cloud optimisation and adoption
Strategy, migration, cost optimisation, security, Microsoft 365 and operations – for companies that want to move to the cloud or are already there.
Cloud optimiser & enabler from Cologne
ONNA brings companies into the cloud securely, cuts running costs and takes over operations if you wish. Plus network, telephony and hardware from a single source – with our own shop.
No obligation and vendor-neutral, with dedicated contacts in Cologne.

The cloud and on-site technology work hand in hand. Choose the area you need – every service can be booked on its own.
Cloud
Strategy, migration, cost optimisation, security, Microsoft 365 and operations – for companies that want to move to the cloud or are already there.
ICT & shop
Planning, delivery and installation of networks, Wi-Fi, phone systems and security technology – with hardware from our own shop.
We quickly get a picture of costs, security and architecture.
You receive concrete measures with effort, impact and order.
We implement – or support your team in doing so.
On request we take over operations and ongoing optimisation, with a monthly report.
Your question is not listed? Ask it in the free initial consultation – the form is at the end of this page.
We do both: companies that are not yet in the cloud, we bring in securely (enabler). Companies that are already there, we help to cut costs and improve security and operations (optimiser).
Mainly for mid-sized companies, practices, law firms and public bodies that have no cloud department of their own or want to strengthen it in a targeted way.
With Microsoft Azure and Microsoft 365, AWS and Google Cloud, plus European providers when data must stay in Europe. We recommend what suits you.
Yes, in our shop – around the clock, with same-day dispatch for orders placed by 8 pm. For projects we prepare individual quotes.
Tell us briefly what it is about – or leave your number for a callback. The initial consultation is free.