Connector diversity with a system: Why MMC is not a replacement but the perfect complement for hyperscale data centres

1. How will the projected threefold growth of hyperscale data centres shape the future of the digital infrastructure industry?

Hyperscale data centres form the backbone of the digital world and are expanding more rapidly than traditional hosting or enterprise data-centre infrastructures. Analysts forecast that the share of hyperscaler capacity in the global data-centre footprint will rise significantly by the end of this decade—driven by cloud computing, SaaS, AI and data-intensive applications.

This development is driven by three key requirements:

• Exponentially growing data and traffic volumes
• Migration to 400G, 800G, 1.6T and, in the near future, 3.2T
• Extremely high port and fibre density in cabling and patching fields

Market analyses also show that the fibre-optic market for data centres is growing strongly: global market value is expected to increase by more than two-and-a-half times between 2024 and 2032. Hyperscale data-centre architectures typically follow a spine-leaf topology, which requires enormous bandwidth between server clusters, consequently driving fibre-optic cabling expansion and connector innovation.

2. Why is technology openness important as a planning principle to avoid technological monocultures?

Hyperscalers strive for maximum flexibility, as incorrect standardisation decisions can be costly—both technically and economically. Studies on structured cabling indicate that modular, high-density fibre-optic architectures are increasingly dominating global data centres, with high single-digit annual growth rates expected through 2032.

In practice, this means:
No single connector technology can meet all requirements; instead, the optimal combination of density, performance and handling must be selected for each use case.

4. “Will MMC now replace all existing connectors?” – clear answer

In short: No.

Market observers instead expect existing connector families to remain remain relevant, with new form factors complementing them.

Each connector family continues to make sense—depending on the use case:

• LC Duplex – the duplex connector with the highest market penetration
• SN/MDC – potential successors to LC Duplex due to higher port density
• MTP^®/MPO/MPE – particularly relevant for backbone cabling due to high fibre counts
• MMC – for high-density scenarios beyond conventional port layouts

In addition, test and maintenance reports indicate that Very Small Form Factor connectors (including MMC), due to their high packing density, impose particular requirements on cleaning, testing and quality assurance relevant, with new form factors complementing them.

This comparison shows: no technology is universal; the choice depends on data-rate requirements, panel specifications and lifecycle strategies.

6. Conclusion: diversity instead of monoculture – even for hyperscalers

Hyperscale data centres place the highest demands on bandwidth, density and flexibility. Technology openness in connector systems is not a nice-to-have but a strategic necessity in order to:

• Protect investments
• Simplify migrations
• Avoid performance silos

New connectors such as MMC are therefore not a disruptive one-size-fits-all solution, but complementary building blocks within a scalable fibre-optic ecosystem capable of meeting the demands of hyperscale performance applications.