With the rapid development of AI, large models, and cloud computing, data center network infrastructure is undergoing unprecedented changes. This report provides in-depth analysis of key trends in the data center network industry for 2025-2026.
## Executive Summary
With the rapid development of AI, large models, and cloud computing technologies, data center network infrastructure is undergoing unprecedented changes.
## Key Findings
- AI computing demand surge: Smart NIC market CAGR exceeds 40%
- Network speed upgrade: 25G/100G becomes the new standard for data centers, 400G deployment begins at scale
- Domestic substitution accelerates: Policy-driven domestic network equipment market share continues to rise
- RDMA technology adoption: Ultra-low latency networks become a rigid requirement for AI training clusters
## Market Size and Growth Forecast
### Global Data Center Network Market
According to industry research forecasts, the global data center network market will continue to grow rapidly.
| Year | Market Size (USD Billion) | YoY Growth | Notes |
|------|--------------------------|------------|-------|
| 2023 | ~21.5 | - | AI-driven initial phase |
| 2024 | ~26.0 | 21% | Generative AI explosion |
| 2025 | ~32.0 | 23% | 400G scale deployment |
| 2026 | ~40.0 | 25% | Lossless network becomes standard |
## Technology Evolution Trends
### 1. Network Protocol Upgrade: From 100G to 400G/800G
Data center networks are evolving toward higher bandwidth. 100G has been deployed at scale among leading customers, 400G is entering the mainstream, and 800G solutions are in testing and validation stages.
### 2. SmartNIC Adoption
Traditional network cards are being replaced by SmartNICs. Cards with DPU characteristics can handle data forwarding, network virtualization, and storage acceleration, significantly freeing up CPU compute power.
### 3. RDMA Becomes De Facto AI Network Standard
In large model training scenarios, RDMA (Remote Direct Memory Access) has become a necessity. RoCEv2 and InfiniBand are competing fiercely, with RoCEv2 gaining more favor due to its openness.
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With the rapid development of AI, large models, and cloud computing technologies, data center network infrastructure is undergoing unprecedented changes.
## Key Findings
- AI computing demand surge: Smart NIC market CAGR exceeds 40%
- Network speed upgrade: 25G/100G becomes the new standard for data centers, 400G deployment begins at scale
- Domestic substitution accelerates: Policy-driven domestic network equipment market share continues to rise
- RDMA technology adoption: Ultra-low latency networks become a rigid requirement for AI training clusters
## Market Size and Growth Forecast
### Global Data Center Network Market
According to industry research forecasts, the global data center network market will continue to grow rapidly.
| Year | Market Size (USD Billion) | YoY Growth | Notes |
|------|--------------------------|------------|-------|
| 2023 | ~21.5 | - | AI-driven initial phase |
| 2024 | ~26.0 | 21% | Generative AI explosion |
| 2025 | ~32.0 | 23% | 400G scale deployment |
| 2026 | ~40.0 | 25% | Lossless network becomes standard |
## Technology Evolution Trends
### 1. Network Protocol Upgrade: From 100G to 400G/800G
Data center networks are evolving toward higher bandwidth. 100G has been deployed at scale among leading customers, 400G is entering the mainstream, and 800G solutions are in testing and validation stages.
### 2. SmartNIC Adoption
Traditional network cards are being replaced by SmartNICs. Cards with DPU characteristics can handle data forwarding, network virtualization, and storage acceleration, significantly freeing up CPU compute power.
### 3. RDMA Becomes De Facto AI Network Standard
In large model training scenarios, RDMA (Remote Direct Memory Access) has become a necessity. RoCEv2 and InfiniBand are competing fiercely, with RoCEv2 gaining more favor due to its openness.