In corporate sector the term Big Four refers to the following 4 companies.
1. Deloitte
2. EY
3. PwC
4. KPMG
Their services to corporate sector is famous and well-known due to its quality and trust.
What services they provide?
EY
The EY offers taxation services and solutions, consulting services and solutions, AI solutions, strategy and transaction services, technology consulting services and solutions,risk services and solutions, sustainability services and solutions, people and workforce, managed services and solutions.
Deloitte
The Deloitte offers audit services, insurance services, business process solutions, customer services, cyber services, human capital, strategy and transaction, sustainability,risk, regulatory and forensic services, legal services,operate services,tax services, engineering services,AI solutions, data services, Enterprise technology and database services, generative AI, global employer services, international specialist services.
PwC
The PwC offers alliances services, Artificial Intelligence services, Audit and assurance services, business model reinvention, business transformation, consulting and crisis management services,deals, entrepreneurial and private business, family business, forensic services, legal and business solutions, managed services, risk services, strategy, sustainability and climate change,tax trust and workforce related services and solutions.
KPMG
The KPMG offers also offers services in similar nature including audit and tax.