AWS Adopts Pre-Assembled Networking Racks to Cut Datacenter Costs

Amazon Web Services has overhauled its physical networking deployment strategy, moving away from traditional manual hardware installation to reduce operational overhead. The shift toward highly integrated, pre-assembled infrastructure marks a significant departure from standard datacenter practices.

According to a report from The Register, AWS has transitioned to using pre-assembled rack units in its datacenter facilities. This approach eliminates the need for technicians to manually screw hardware into racks using cage nuts, a staple of traditional server deployment. Racks now arrive as fully assembled units, meaning manual hardware installation is largely absent from current AWS facility operations. Matt Rehder, the VP of Global Network Engineering at AWS, oversees these networking operations.

The Drive for Vertical Integration

This transition is part of a broader strategic trend at AWS toward vertical integration. As cloud providers scale to meet the massive data and compute demands of artificial intelligence, the physical and logical architecture of the network often becomes a primary bottleneck for both performance and cost. By designing its own hardware and streamlining the physical deployment process, AWS reduces its reliance on third-party vendors and minimizes the labor-intensive nature of scaling physical infrastructure.

This move mirrors existing efforts in silicon, where the company has developed proprietary chips such as Graviton and Trainium to optimize performance and lower costs compared to off-the-shelf components.

Structural Cost Advantages

The move to pre-assembled networking infrastructure creates a structural cost advantage that is difficult for competitors to replicate quickly. Most datacenter operators still rely on traditional hardware scaling, which involves significant manual labor and the use of generic, off-the-shelf networking gear. By decoupling its networking costs from these traditional scaling methods through proprietary integration and automation, AWS can potentially achieve higher margins or implement more aggressive pricing for its cloud services.

Reducing the time and labor required to bring new capacity online allows AWS to respond more fluidly to demand spikes, particularly those driven by the current AI boom, while keeping operational expenditures lower than those of less integrated providers.

Future Outlook

While AWS has implemented these efficiencies, the company has not heavily promoted the specifics of its networking hardware strategy. Industry observers suggest that the scale of these cost-busting measures represents a competitive edge that the company has historically under-emphasized in its public marketing.

As the industry continues to grapple with the physical limits of datacenter power and cooling, the focus is expected to shift further toward how the physical layer—the actual racks and cabling—can be optimized. Whether other hyperscalers will move toward similar pre-assembled, proprietary rack models remains to be seen, but AWS's current trajectory suggests a permanent move away from the traditional 'cage nut' era of networking.