Arista Networks vs ServiceNow
Cloud networking hardware and software provider for data centers vs Enterprise software giant for digital workflows. Which is the better buy for your portfolio in September 2026? Plain-English answer below.
Arista Networks dominates cloud networking with its high-speed switches and the EOS operating system that hyperscalers and financial firms have standardized on, while ServiceNow runs the enterprise workflow automation platform that IT, HR, and operations teams use to manage requests and processes at scale. Both are enterprise software and infrastructure companies with best-in-class net revenue retention and strong switching costs that protect their installed bases from competitive displacement. The Arista Networks vs ServiceNow comparison gives readers a detailed look at how networking hardware and software economics compare across gross margins, growth durability, and valuation multiples that reflect each company's position in the enterprise stack.
Arista Networks dominates cloud networking with its high-speed switches and the EOS operating system that hyperscalers and financial firms have standardized on, while ServiceNow runs the enterprise wo...
Why It’s Moving
ANET gains fresh momentum as S&P 100 inclusion reinforces its AI-networking growth story.
- S&P 100 inclusion took effect before the September 21 open, creating potential short-term demand from benchmark-tracking funds and raising ANET’s visibility among large-cap investors.
- Recent coverage emphasized Arista’s third 2026 revenue-guidance increase to about $12.6 billion, implying roughly 40% growth and signaling that AI data-center networking demand remains stronger than previously expected.
- A September 17 filing disclosed that 10% stockholder Andreas Bechtolsheim planned to sell 300,000 shares under a Rule 10b5-1 plan, adding a supply-related counterweight to the otherwise positive momentum.
ServiceNow Gains Momentum as Enterprise Software Sector Defies Broader Tech Slump
- Investors are reacting to a sector-wide rally in enterprise software, with ServiceNow joining peers like Atlassian and Salesforce in climbing while the iShares Expanded Tech-Software Sector ETF rose 1%.
- The stock benefits from new AI-native partnerships, including a recent integration with Xapien to embed automated due diligence directly into ServiceNow workflows for third-party risk management.
- Analysts highlight that ServiceNow's growth is fueled by broad workflow demand and cross-selling opportunities, positioning it competitively against rivals like Microsoft and Salesforce despite mixed short-term price action.
ANET gains fresh momentum as S&P 100 inclusion reinforces its AI-networking growth story.
- S&P 100 inclusion took effect before the September 21 open, creating potential short-term demand from benchmark-tracking funds and raising ANET’s visibility among large-cap investors.
- Recent coverage emphasized Arista’s third 2026 revenue-guidance increase to about $12.6 billion, implying roughly 40% growth and signaling that AI data-center networking demand remains stronger than previously expected.
- A September 17 filing disclosed that 10% stockholder Andreas Bechtolsheim planned to sell 300,000 shares under a Rule 10b5-1 plan, adding a supply-related counterweight to the otherwise positive momentum.
ServiceNow Gains Momentum as Enterprise Software Sector Defies Broader Tech Slump
- Investors are reacting to a sector-wide rally in enterprise software, with ServiceNow joining peers like Atlassian and Salesforce in climbing while the iShares Expanded Tech-Software Sector ETF rose 1%.
- The stock benefits from new AI-native partnerships, including a recent integration with Xapien to embed automated due diligence directly into ServiceNow workflows for third-party risk management.
- Analysts highlight that ServiceNow's growth is fueled by broad workflow demand and cross-selling opportunities, positioning it competitively against rivals like Microsoft and Salesforce despite mixed short-term price action.
Investment Analysis
Arista Networks
ANET
Pros
- Arista Networks holds a leading market share in high-speed Ethernet switching, benefiting from strong technology leadership and steady share gains since 2004.
- The company demonstrated strong financial performance with 28% year-over-year sales growth to $2.31 billion in Q3 2025 and positive earnings beats.
- Arista Networks boasts a high return on equity (ROE) of 32.3%, reflecting efficient profitability and capital utilisation over recent years.
Considerations
- Arista faces challenges in expanding beyond its core high-speed switching segment, limiting diversification in related networking markets.
- Its reported stock valuation shows a high price-to-earnings ratio (around 41.7) and trades at a premium, indicating potentially stretched valuation.
- Customer concentration risk is notable, with major clients like Microsoft and Meta accounting for roughly three-quarters of sales, potentially impacting revenue stability.
ServiceNow
NOW
Pros
- ServiceNow has a strong market position as a provider of comprehensive workflow automation solutions for digital enterprises worldwide.
- The company maintains a large market capitalization near $195 billion, indicating significant scale and investor confidence.
- ServiceNow's growth drivers include expanding enterprise digital transformation initiatives and increasing adoption of cloud-based automation platforms.
Considerations
- ServiceNow operates in a highly competitive technology market subject to rapid changes and evolving customer demands, posing execution risks.
- The firm's premium valuation level may limit upside potential and increases sensitivity to shifts in growth expectations or economic downturns.
- High dependency on continuous innovation and integration could lead to operational challenges and require sustained investment in R&D.
Arista Networks (ANET) Next Earnings Date
Arista Networks (ANET) is currently expected to release its next earnings report on November 3, 2026. The report is expected to cover fiscal third-quarter 2026, ended September 30, 2026. The date remains an estimate pending formal confirmation by the company.
ServiceNow (NOW) Next Earnings Date
ServiceNow (NYSE: NOW) is expected to report its next earnings on October 28, 2026. The release will cover the fiscal third quarter of 2026, ending September 30. The date is consistent with the company’s historical late-October reporting pattern.
Arista Networks (ANET) Next Earnings Date
Arista Networks (ANET) is currently expected to release its next earnings report on November 3, 2026. The report is expected to cover fiscal third-quarter 2026, ended September 30, 2026. The date remains an estimate pending formal confirmation by the company.
ServiceNow (NOW) Next Earnings Date
ServiceNow (NYSE: NOW) is expected to report its next earnings on October 28, 2026. The release will cover the fiscal third quarter of 2026, ending September 30. The date is consistent with the company’s historical late-October reporting pattern.
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