21Vianet vs Sify Technologies
Both are primarily Data Center Operators (Colo) companies. 21Vianet is larger by market cap ($1.5B vs $920M). 21Vianet reports higher tracked revenue ($544M vs $466M).
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Side-by-side
| 21Vianet | Sify Technologies | |
|---|---|---|
| Market cap | $1.5B | $920M |
| Revenue | $544M (FY2019) | $466M (FY2025) |
| Primary segment | Data Center Operators (Colo) | Data Center Operators (Colo) |
| Market position | niche | niche |
| Country | China | India |
| Tracked suppliers | 4 | 4 |
| Tracked customers | 5 | 5 |
| Chokepoint / criticality | 6/100 | 6/100 |
Market caps/revenue from the wafergraph dataset · data as of 2026-10-09. Criticality is a graph-derived chokepoint score (0–100). Coverage is partial; "Unpriced" means no reliable market cap.
How 21Vianet and Sify Technologies compare
- Size: 21Vianet is the larger company by market cap.
- Revenue: 21Vianet reports higher tracked revenue.
- Supply-chain criticality: Both companies have the same chokepoint score (6/100).
- Footprint: 21Vianet (China) vs Sify Technologies (India).
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Cite as: wafergraph, “21Vianet vs Sify Technologies”, https://wafergraph.com/compare/21vianet-vs-sify (data as of 2026-10-09).
Frequently asked questions3
- Is 21Vianet bigger than Sify Technologies?
- 21Vianet is larger by market cap ($1.5B vs $920M).
- What's the difference between 21Vianet and Sify Technologies?
- 21Vianet is a niche in Data Center Operators (Colo) based in China; Sify Technologies is a niche in Data Center Operators (Colo) based in India. Both operate in the AI & Data Center segment.
- Who are 21Vianet's and Sify Technologies's suppliers?
- wafergraph tracks 4 suppliers for 21Vianet and 4 for Sify Technologies.