CrowdStrike sells cloud-based cybersecurity software that protects laptops, servers and cloud workloads from breaches, built around a single lightweight agent that collects security data across an organization. That architecture lets CrowdStrike add new security modules, like identity protection or cloud security, as add-on products sold to the same installed base rather than requiring separate agents and separate sales relationships. The company built its reputation partly through high-profile incident response work investigating major corporate breaches, work that doubles as a credibility signal for its core software product. CrowdStrike competes with both legacy antivirus vendors modernizing their offerings and a wave of newer cloud security startups, in a market where the cost of a security failure keeps corporate security budgets a priority even during broader spending slowdowns.