Microsoft has replaced eight executives across its security business in a broad leadership overhaul that includes appointing a new head of security, according to a report from The Information.

The restructuring follows the appointment of former Google Cloud executive Hayete Gallot to lead Microsoft’s security organization, replacing Charlie Bell, who will transition to an engineering role after nearly five years overseeing the business.

According to The Information, Gallot has replaced eight members of Bell’s senior leadership team with executives from across Microsoft, marking one of the largest management shakeups within the company’s security division in recent years. The changes are intended to simplify the organization’s structure and accelerate decision making.

Bell joined Microsoft in 2021 after more than two decades at Amazon Web Services and led the company’s Security, Compliance, Identity, and Management business. During his tenure, Microsoft expanded its security business from roughly $10 billion in annual revenue to more than $20 billion, while also navigating several high profile cyber incidents that prompted increased scrutiny from US regulators.

Microsoft has made security a companywide priority following a series of breaches that affected government and enterprise customers. In 2024, the company launched its Secure Future Initiative, tying executive compensation more closely to security performance and reorganizing teams to improve accountability.

The latest leadership changes come as Microsoft continues a broader restructuring across the company, with CEO Satya Nadella streamlining management teams while increasing investment in artificial intelligence and cybersecurity.