Dell’Oro Group’s Network Security research tracks the global market as enterprise security evolves across physical appliances, virtual appliances, and cloud-delivered solutions. The reports analyze market growth, technology transitions, vendor positioning, and regional trends across firewalls, Security Service Edge (SSE), Secure Web Gateways, Web Application Firewalls, and Application Delivery Controllers.

Research scope

The enterprise Network Security landscape is evolving rapidly as organizations accelerate their shift to the cloud, adopt hybrid work models, and rely on an increasing number of internet-based applications accessed by globally distributed users. At the same time, the attack surface continues to expand, exposing fully digitalized enterprises to new and sophisticated threats.

The research examines how these changes are influencing Network Security architectures, technology adoption, and purchasing patterns, including the shift from traditional security appliances toward cloud-native and AI-driven security solutions.

Why it matters

As the Network Security market evolves, new technologies, delivery models, and competitive dynamics are creating opportunities across the industry. To take advantage of these opportunities, equipment vendors, service providers, and financial institutions need to understand which market segments are growing, how enterprise requirements are changing, and which vendors and technologies are best positioned to benefit.

Critical questions

◼ 01
Where are the fastest-growing segments in network security, and how quickly are enterprises transitioning from traditional security appliances to cloud-native and AI-driven security solutions?
◼ 02
How have hybrid work models and post-pandemic enterprise strategies impacted network security architecture and purchasing patterns?
◼ 03
Will the $10 B+ firewall market fade, or will it continue its nearly thirty-year march of consistent growth?
◼ 04
How is cloud-delivered network security in the form of security service edge (SSE) solutions reshaping the market? What is the market adoption of its four primary functions (cloud access security brokers (CASB), firewall-as-a-service (FWaaS), secure web gateway (SWG), and zero-trust network access (ZTNA)?
◼ 05
Why are Web Application Firewalls (WAF) and API security solutions experiencing higher growth compared to traditional firewalls, and how are modern applications shaping this trend?
◼ 06
What role are hyperscale cloud service providers playing in reshaping the network security ecosystem, and how are vendors aligning to meet this challenge?
◼ 07
Which vendors are leading the shift to platform-centric security architectures, and how are they differentiating through innovation, ecosystem partnerships, and AI integration?

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Report Coverage

◼ Quarterly Reports
  • Firewall: High End, Midrange, and Low End
  • Security Service Edge (SSE)
  • Secure Web Gateway Appliances
  • Web Application Firewalls (WAF)
  • Application Delivery Controllers (ADC)
  • Market Metrics: Manufacturer revenue across physical appliances, virtual appliances, and SaaS; select segments also include units/licenses and average selling prices
  • Regional Coverage: North America, EMEA, Asia Pacific excluding China, China, and CALA
  • Vendor Market Share: Global and regional vendor performance
◼ 5-Year Forecasts
  • Market Forecasts: Five-year outlook covering the same segments and metrics captured in the quarterly reports
  • Historical Data: Market trends extending as far back as 1998
  • Legacy Markets: Historical coverage of WAN Optimization, SSL/VPN, Content Security, and IDS/IPS

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