Zscaler has raised $148M across major funding rounds, accelerating its rise as a global leader in cloud security and zero-trust network access. Key milestones include the $110M Series B round in 2015 backed by TPG, CapitalG, and Lightspeed, along with its $38M Series A in 2012, which enabled early platform development. Zscaler later secured a $1B post-IPO capital infusion in 2020 to scale enterprise adoption and expand worldwide operations. These funding rounds strengthened Zscaler’s platform capabilities across secure access, threat protection, and cloud-native network transformation.