Equinix has reached the topping out milestone on the next phase of its MU4 data center outside Munich, Data Center Dynamics reported on July 18, 2026. Topping out is the moment the structure is fully framed and roofed, which is when a construction site stops being a shell and starts becoming a working building: the internal fit out of power, cooling, and cabinets can begin in earnest. On its own a wreath raised over a roof in Aschheim is a small event, but it is a useful marker of where European colocation capacity is heading. MU4 has grown in stages since 2022, and at full build out it will span more than thirteen thousand square meters across four floors with space for close to three thousand additional cabinets.
The short answer
Equinix has topped out the next phase of its MU4 data center in Aschheim near Munich, according to a Data Center Dynamics report on July 18, 2026. Topping out means the structure is framed and roofed, clearing the way for the internal fit out of power, cooling, and cabinets. MU4 opened its first phase in 2022 and is planned to reach 13,608 square meters across four floors, with room for close to 2,950 more cabinets. It is a quiet but real marker of European colocation capacity being added in a major German metro.
Most data center news arrives as enormous numbers: gigawatts of planned capacity, tens of billions in capital, campuses measured in the hundreds of acres. A topping out is the opposite kind of story. It is one building, in one suburb, reaching the point where the roof goes on. We think those smaller markers are worth reading too, because they tell you what is actually being finished rather than what is being announced. A wreath on a roof in Aschheim means real cabinets are coming to Munich, not that a slide deck exists.
What Equinix reported
According to Data Center Dynamics, Equinix has reached the topping out milestone on the latest phase of MU4, its data center at Dywidagstrasse 10 in Aschheim, just outside Munich. Topping out is a construction term that predates data centers by centuries. It marks the point where a building is framed to its full height and the roof structure is complete, traditionally celebrated by raising a tree or wreath over the top of the building.
For a data center the milestone has a practical meaning. Once the shell is closed and weathertight, the internal fit out can move quickly and without weather risk: power distribution, cooling plant, network rooms, and the cabinet halls themselves. The building is not live yet, and no customer is deploying gear the week of a topping out. What it tells you is that the facility is progressing on schedule toward becoming operational capacity.
How MU4 has grown
MU4 is not a new site, it is one that keeps expanding in phases. Equinix opened the first phase in 2022 with roughly 2,250 square meters of colocation space, which works out to around 950 cabinets. A second phase in 2024 added about 750 more cabinets. The building is owned by Equinix rather than leased, which gives the company control over how and when it scales the site.
At full build out, MU4 is planned to reach 13,608 square meters spread across four floors, with capacity for close to 2,950 additional cabinets beyond the earlier phases. That is a meaningful amount of colocation supply landing in a single metro, and the phased approach means Equinix can bring it online as demand justifies rather than all at once.
Why Munich, and why it matters to you
Frankfurt gets most of the attention when people talk about German data centers, and for good reason: it hosts one of the largest internet exchanges in the world. Munich is the quieter second option, and that is part of its appeal. It is a major business and industrial center, with large enterprises in automotive, manufacturing, insurance, and a growing software sector, all of which want low latency access to compute close to home.
Equinix runs Munich as one of its interconnection metros, which means a presence there is not only about floor space. It is about being able to peer, connect to networks and clouds, and reach an internet exchange without hauling traffic to Frankfurt first. If you operate infrastructure in the DACH region, here is the practical read.
- A second German metro is worth having on your map. Concentrating everything in Frankfurt is convenient until it is not. A growing Munich footprint gives you an alternative for latency to southern German and Austrian users, for resilience across two sites, and for spreading risk.
- Interconnection matters as much as square meters. New cabinets are only useful if you can connect them to the networks and clouds you depend on. The value of an Equinix metro is the peering and cloud on ramps that come with it, so weigh interconnection density, not just capacity, when you choose a site.
- Data residency has a home here. For workloads that must stay inside Germany for regulatory or sovereignty reasons, having more than one credible German location gives you room to design for compliance without painting yourself into a single building.
None of this means you should move anything today. Capacity coming online in Munich is a slow signal, not a call to action. But it is a real one. Behind the headline gigawatt announcements, this is what the buildout looks like up close: one roof at a time, in metros where the users actually are.
Sources and further reading
- Data Center Dynamics: Equinix tops out Munich data center in Germany
- Equinix: Munich MU4 data center
- Baxtel: Equinix Munich MU4 data center profile
Frequently asked questions
What does topping out actually mean for a data center?
Topping out is a construction milestone, not an opening. It marks the point where the building structure is complete to its highest level and the roof is on, so the site is weathertight. For a data center that matters because the internal fit out, the power distribution, cooling, network rooms, and cabinet halls, can then proceed without exposure to the elements. A topping out signals that a facility is on track, but the racks are not live yet and customers cannot deploy the same day.
How big is Equinix MU4 and how has it grown?
MU4 sits at Dywidagstrasse 10 in Aschheim, just outside Munich. Equinix opened the first phase in 2022 with around 2,250 square meters of colocation space, equal to roughly 950 cabinets. A second phase in 2024 added about 750 more cabinets. At full build out the site is planned to reach 13,608 square meters across four floors, with capacity for close to 2,950 additional cabinets beyond the earlier phases.
Why does Munich matter as a colocation location?
Munich is one of Germany's major business and industrial hubs, home to large enterprises in automotive, manufacturing, insurance, and increasingly software. Placing capacity there gives companies low latency access to those users and to an Equinix metro that offers interconnection and internet exchange peering. For teams that need their data to stay inside Germany for regulatory or sovereignty reasons, a Munich footprint is an alternative to the larger Frankfurt cluster.
Should this change where I put my own infrastructure?
Not overnight, but capacity news is worth tracking if you run colocation or hybrid setups. More cabinet space in a metro tends to ease availability and gives you a second German location beyond Frankfurt to consider for latency, resilience, or data residency. The practical questions stay the same: where are your users, where do you need to peer, and what does your compliance posture require. A new hall does not answer those, but it widens your options.