F5

Corporate brand

F5 provides application delivery, application security, API protection, and edge services for applications and workloads across on-premises, cloud, and hybrid environments. F5 is a U.S. technology company providing application delivery, application security, API security, and multicloud solutions.

Last updated October 14, 2026

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Overview

F5 is a Seattle-based technology company focused on application delivery and application security. Its products and services help organizations deploy, operate, protect, and optimize applications, application programming interfaces, and increasingly distributed workloads across data centers, public clouds, private clouds, and edge locations. The company is best known for BIG-IP, a family of software and appliance-based traffic-management and security products, and for NGINX, the open-source web server and application-delivery platform acquired by F5 in 2019. The company was founded in 1996 and initially built its business around load balancing and application traffic management. As enterprises moved from traditional data centers toward web applications, virtualization, containers, and multiple cloud environments, F5 broadened its scope beyond basic load balancing. Its portfolio came to include local and global traffic management, web application firewalls, distributed denial-of-service protection, bot defense, API security, identity-aware access controls, application visibility, and tools for managing application performance and availability. BIG-IP remains the central product family. It includes hardware, virtual, and cloud-deployed versions of F5 software for distributing traffic, maintaining application availability, inspecting and filtering requests, and enforcing security policies. F5 has also developed subscription and software-as-a-service offerings intended to give customers a more unified way to secure and deliver applications across different infrastructure types. The company’s newer positioning emphasizes a common control and security layer for applications, APIs, and AI-related workloads rather than treating data-center appliances as its sole market. NGINX expanded F5’s reach among developers, cloud-native teams, and organizations using open-source web infrastructure. NGINX technologies are used as web servers, reverse proxies, ingress components, API gateways, and application delivery tools. F5 has maintained the open-source NGINX project while offering commercial NGINX products and enterprise support. The combination of BIG-IP and NGINX gives F5 exposure to both traditional infrastructure teams and modern application-development organizations. F5 sells through direct sales, channel partners, cloud marketplaces, and technology alliances. Its customers include large enterprises, public-sector organizations, telecommunications providers, financial institutions, retailers, healthcare organizations, and service providers. The company states that its customer base includes a substantial share of large global enterprises. Its competitive environment includes application delivery controller vendors, cloud-provider services, content delivery and edge-security companies, web and API security specialists, and open-source or developer-led alternatives. F5 is a public company listed on Nasdaq as FFIV. It remains an independent operating company and is headquartered in Seattle. Its current business direction centers on consolidating application delivery and security capabilities, increasing recurring software and subscription revenue, supporting hybrid and multicloud deployments, and addressing the security and performance requirements of APIs, distributed applications, and AI workloads.

History

F5 was established in Seattle in 1996 during the expansion of internet-based business applications. Its early business addressed a practical infrastructure problem: organizations needed a reliable way to distribute requests across multiple servers so that web applications could remain available as traffic increased. This led F5 into the market for load balancing and application traffic management, where its products became an intermediary between users and application servers. As enterprise applications became more complex, F5 expanded the role of its platform. BIG-IP products combined traffic distribution with functions such as health monitoring, session persistence, network address translation, application acceleration, and policy-based routing. Later generations added web application firewall capabilities, access management, DNS and global traffic management, and protection against denial-of-service attacks. These additions moved F5 from a specialist load-balancing vendor toward a broader application delivery controller and application-security provider. The company’s traditional business was strongly associated with purpose-built appliances installed in corporate data centers. Market changes gradually required a wider deployment model. Virtualization and public-cloud adoption created demand for software versions of F5 products, while containerization and DevOps practices increased the importance of automation, APIs, declarative configuration, and developer-friendly tooling. F5 responded by offering virtual editions, cloud integrations, management software, and services designed to operate across multiple environments. F5 acquired NGINX in 2019. NGINX brought an open-source web server and reverse-proxy technology with broad adoption among developers and cloud-native infrastructure teams. The acquisition gave F5 a stronger position in modern application delivery and allowed it to combine enterprise support and security capabilities with NGINX’s developer ecosystem. F5 continued to support the open-source NGINX project while developing commercial NGINX products for organizations requiring enterprise features, support, and centralized management. F5 subsequently added or developed capabilities in API security, bot mitigation, distributed denial-of-service defense, fraud and abuse prevention, and cloud-based application protection. Its Distributed Cloud Services portfolio was intended to address applications deployed across data centers, public clouds, branch locations, and edge sites. The company also repositioned its products around a unified application and API security model, reflecting the increasing importance of APIs and distributed software architectures. The introduction of BIG-IP Next represented a further modernization effort. Rather than relying solely on the architecture of earlier appliance-centered products, F5 presented BIG-IP Next as a more modular and software-oriented foundation intended to support automation, cloud deployment, and consistent management. The company’s broader strategy has been to preserve its installed enterprise base while increasing the share of recurring software and services and reaching customers earlier in the application-development lifecycle. F5 remains a publicly traded, independent company headquartered in Seattle. Its current scope covers application delivery, web and API security, multicloud networking, edge services, traffic management, and related operational visibility. The company serves large enterprises and public-sector and service-provider customers worldwide. Its competitive challenge is to differentiate integrated enterprise offerings from hyperscaler-native services, specialized security vendors, content delivery networks, and open-source technologies. F5’s present identity therefore combines its historical strength in application availability with a broader promise to secure and deliver applications wherever they run.

2023
BIG-IP Next is introduced
[7]Distributed Cloud Services expands F5’s cloud strategyf5.com
F5 introduces a modernized BIG-IP software architecture aimed at cloud deployment, automation, and a more consistent operating model.
2021
Distributed Cloud Services expands F5’s cloud strategy
[7]Distributed Cloud Services expands F5’s cloud strategyf5.com
F5 presents a broader cloud and edge services portfolio for application delivery and security across distributed environments.
2019
NGINX acquisition closes
[4]F5 completes acquisition of NGINXf5.com
F5 completes its acquisition of NGINX, broadening its application-delivery portfolio into open-source and cloud-native infrastructure.
2017
François Locoh-Donou becomes CEO
[6]François Locoh-Donou becomes CEOf5.com
François Locoh-Donou takes over as president and chief executive officer.
2001
F5 becomes a Nasdaq-listed company
[5]F5 investor relationsf5.com
F5 establishes its public-company identity under the ticker FFIV.
2000
John McAdam becomes chief executive
[1]F5 official company overviewf5.com
John McAdam succeeds the company’s earlier leadership and leads F5 during its expansion in application delivery networking.
1996
F5 is founded
[1]F5 official company overviewf5.com
F5 is established in the United States and begins developing technology for enterprise application delivery and traffic management.

Products and positioning

Enterprise application delivery and security provider spanning hybrid multicloud infrastructure, APIs, edge environments, and AI workloads. Enterprise application delivery and security provider for hybrid multicloud environments, with capabilities spanning traffic management, application and API protection, web and application infrastructure, and protection against automated abuse.

Application delivery and security platform
BIG-IP
BIG-IP is F5’s principal application delivery and security product family. Depending on the module and deployment model, it can distribute traffic, balance workloads, manage local and global application availability, inspect application requests, enforce web security policy, provide access control, and protect against selected network and application attacks. BIG-IP has historically been available as physical appliances, virtual editions, and cloud-deployed software. The family includes capabilities associated with local traffic management, advanced web application firewall protection, DNS and global traffic management, access policy, and centralized operational management. Specific modules and capabilities can vary by deployment and product generation. BIG-IP is F5's principal application delivery and security portfolio. It is associated with traffic management, application delivery control, load balancing, and security functions for enterprise applications. The portfolio is intended to help organizations maintain application availability, control traffic flows, and apply security policies across data-center, private-cloud, public-cloud, and hybrid environments. Specific modules and capabilities can vary by deployment and product generation.
Web server and cloud-native application delivery · 2004
NGINX
NGINX is an open-source web server and reverse proxy used for serving web content, terminating connections, routing requests, load balancing, and supporting modern application architectures. F5’s NGINX portfolio also includes commercial products and enterprise support for organizations that need API management, ingress control, centralized policy, observability, and production assistance. NGINX gives F5 a developer- and cloud-native-oriented platform alongside the more infrastructure-focused BIG-IP family, and it is relevant to organizations building and operating modern applications across cloud and containerized environments. NGINX is F5's software-oriented application infrastructure portfolio. It is associated with web serving, reverse proxying, application delivery, ingress, and API-related workloads. NGINX is relevant to organizations building and operating modern applications across cloud and containerized environments, and it complements F5's broader emphasis on application performance, availability, and security. The supplied material does not provide a verified launch chronology or detailed product-by-product specification.
Cloud application delivery and security services · 2021
F5 Distributed Cloud Services
F5 Distributed Cloud Services is a cloud-based portfolio for securing, connecting, and delivering applications and APIs across public clouds, data centers, branch locations, and edge sites. Its scope includes application delivery, web application and API protection, bot and denial-of-service defense, multicloud networking, and operational visibility. The portfolio is intended to give customers a service-based alternative or complement to appliance and virtual-edition deployments.
Web application firewall
F5 BIG-IP Advanced WAF
BIG-IP Advanced WAF protects web applications from common and application-specific attacks by inspecting HTTP and HTTPS traffic and applying configurable security policies. It is designed for enterprise deployments that require control over application security, traffic management, attack mitigation, and integration with existing BIG-IP infrastructure. The offering can be deployed in appliance, virtual, and cloud-oriented forms depending on the customer environment.
Global traffic management and DNS
F5 BIG-IP DNS
BIG-IP DNS manages the distribution of application requests across data centers, cloud regions, and other deployment locations. It uses availability and performance information to direct users toward suitable services and can support continuity and disaster-recovery strategies. The product extends F5’s historical traffic-management role beyond a single site to geographically distributed application architectures.
Application security and automated-abuse protection
Shape Security
Shape Security is identified by F5 as part of its application security portfolio. Its role is associated with protecting digital services from automated abuse and related threats that can affect online applications and customer-facing systems. Within F5's overall positioning, Shape contributes security capabilities that complement application delivery, API protection, and traffic-management technologies.

Controversies

2020
Lynwood sues F5 over NGINX ownership
Lynwood Investments CY Limited sued F5 Networks over ownership of the NGINX software business. The lawsuit alleges Lynwood, rather than NGINX, Inc., F5 Networks or other defendants, is the rightful owner of the NGINX enterprise.
Source

2023
Introduction of BIG-IP NextGeneration change
Background
Customers increasingly expected application delivery and security platforms to support automation, cloud deployment, and modern software operating practices.
Action taken
F5 introduced BIG-IP Next as a modernized architecture for delivering and securing applications across different infrastructure environments.
Aftermath
BIG-IP Next became part of F5’s effort to modernize its core platform and support a transition toward software, subscriptions, and cloud-oriented operations.
Source
2021
Expansion into distributed cloud application servicesStrategy
Background
Applications were increasingly being deployed across multiple clouds, data centers, and edge locations, creating demand for consistent security and delivery controls.
Action taken
F5 expanded and promoted Distributed Cloud Services as a cloud-based portfolio for application delivery, API protection, security, and multicloud connectivity.
Aftermath
The move strengthened F5’s software- and service-oriented positioning and reduced its dependence on a purely appliance-centered application delivery model.
Source
2019
Acquisition of NGINXM&A
Background
F5 sought to broaden its established application delivery and security business into developer-oriented, open-source, and cloud-native application infrastructure.
Action taken
F5 completed the acquisition of NGINX and incorporated its commercial and open-source technologies into the wider F5 portfolio.
Aftermath
The transaction expanded F5’s presence among software developers and cloud-native infrastructure teams while giving NGINX access to F5’s enterprise sales, support, and security capabilities.
Source

Recent events

2024
F5 reports continuing shift toward software and services[7]Distributed Cloud Services expands F5’s cloud strategyf5.com
Other
F5 continued emphasizing software, subscription, and services revenue while positioning application delivery and security as a unified offering for hybrid multicloud deployments.
2023
F5 launches BIG-IP Next[7]Distributed Cloud Services expands F5’s cloud strategyf5.com
Product launch · Product generation
F5 introduced BIG-IP Next as a modernized software architecture for application delivery and security, with an emphasis on cloud deployment, automation, and a consistent operating model.
2021
F5 announces Distributed Cloud Services strategy[7]Distributed Cloud Services expands F5’s cloud strategyf5.com
Product launch
F5 expanded its cloud and edge portfolio with a unified set of application delivery and security services intended for distributed and multicloud environments.
2019
F5 completes acquisition of NGINX[4]F5 completes acquisition of NGINXf5.com
M&A
F5 completed its acquisition of NGINX, adding a widely used open-source web server and application-delivery platform to its enterprise application-services portfolio.

Sources20 sources

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