Cast Iron Systems is a company.
Cast Iron Systems has raised $39.0M across 3 funding rounds.
Key people at Cast Iron Systems.
Cast Iron Systems has raised $39.0M in total across 3 funding rounds.
Key people at Cast Iron Systems.
Cast Iron Systems has raised $39.0M in total across 3 funding rounds.
Cast Iron Systems's investors include Norwest Venture Partners, Tenaya Capital.
Cast Iron Systems was a Mountain View, California-based software company founded in 2001 that developed software-as-a-service (SaaS) integration appliances for connecting on-premise enterprise applications with cloud services.[1][2][4] It targeted large and midsize companies, offering products like the iA3000 appliance and preconfigured solutions for integrating systems such as SAP, Salesforce.com, Amazon EC2, Google Apps, Microsoft Azure, and Oracle, solving the challenge of hybrid cloud connectivity without replacing existing infrastructure.[1][2][4] The company achieved thousands of customer deployments across industries, serving clients like Allianz, NEC, Peet's Coffee & Tea, Dow Jones, and Time Warner, before its acquisition by IBM in May 2010.[4][5]
Backed by prominent investors including IBM, Sequoia Capital, Norwest Venture Partners, Invesco, and ARTIS Ventures, Cast Iron demonstrated strong early growth with about 75 employees at acquisition, positioning it as a leader in the emerging cloud integration market.[1][2][4]
Founded in 2001, Cast Iron Systems emerged during the early days of SaaS and cloud computing, focusing on appliances that bridged traditional on-premise apps with emerging cloud services.[1][2][4] The founders tapped into the need for fast, flexible integration as enterprises began adopting tools like Salesforce.com while maintaining legacy systems such as CRM and ERP.[2][4] Key early traction came from thousands of integrations worldwide, building a broad ecosystem with cloud providers including Amazon, Google, Microsoft, and Oracle.[2][4] This momentum led to its acquisition by IBM on May 3, 2010, integrating its technology into IBM's WebSphere portfolio to enhance hybrid cloud offerings like CloudBurst.[2][3][4]
Cast Iron rode the hybrid cloud trend in the late 2000s, as enterprises sought to link legacy on-premise systems with rising public clouds amid growing SaaS adoption.[2][4][7] Its timing was ideal: post-2001 dot-com recovery, it addressed market forces like cloud proliferation from Amazon, Google, and Salesforce, filling a gap in middleware for secure, controlled integration.[2][6] By enabling hybrid setups, it influenced the ecosystem, paving the way for IBM's expanded cloud portfolio and broader industry shifts toward multi-cloud strategies, with its tech complementing leaders in SOA and middleware.[2][4]
Post-2010 acquisition, Cast Iron's technology was absorbed into IBM's offerings, enhancing WebSphere for ongoing hybrid cloud needs, though the standalone brand ceased.[2][4] Looking ahead, its legacy endures in modern integration platforms amid escalating multi-cloud demands driven by AI, edge computing, and data sovereignty. As enterprises evolve toward seamless hybrid environments, Cast Iron's pioneering appliances underscore the foundational role of such brokers in today's $100B+ integration market, influencing successors in automated, API-first connectivity. This early innovator set the stage for the cloud bridges still critical to enterprise digital transformation.[2][7]
Cast Iron Systems has raised $39.0M across 3 funding rounds. Most recently, it raised $17.0M Series F in July 2007.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Jul 1, 2007 | $17.0M Series F | Norwest Venture Partners, Tenaya Capital | |
| Mar 1, 2005 | $14.0M Series D | Norwest Venture Partners | |
| Jul 1, 2003 | $8.0M Venture Round | Norwest Venture Partners |