Arista reports $3.66bn quarterly revenue, up 58.5%

The AI infrastructure story also runs through the networks connecting the machines.

What happened

Arista reported $3.66 billion in Q3 revenue, up 58.5% year on year and above its $3.3 billion guidance.

GAAP operating margin reached 44.9%. The company forecast fourth-quarter revenue of $3.9 billion to $4 billion.

These are company-wide results, not a separately disclosed AI-revenue figure.

Why it matters

Large computing systems need networking to move data between servers and other infrastructure. Arista's growth provides evidence of demand for its overall business, while the company-wide numbers do not isolate how much came specifically from AI.

The bigger picture

The quarter's results and the next quarter's forecast serve different purposes: one reports performance already recorded, while the other sets expectations. Any claim about AI's precise contribution would require a separate revenue breakdown.