Cisco Systems is a global manufacturer of network equipment: routers, switches and servers, as well as software for data transmission on the Internet and corporate networks. The company was founded in 1984 in San Jose (California, USA). Today, Cisco dominates the Internet Protocol (IP) -based network equipment segment, and also manufactures cybersecurity, video conferencing systems, and other network equipment and software. In addition, Cisco offers a number of cloud services. Cisco's primary customers are large enterprises and telecommunications service providers, but the company also sells products aimed at small businesses and the public sector. Cisco offers products and services in four categories. The company's infrastructure platforms generate more than half of its revenue. This includes switching devices, routing devices, wireless communications, and data processing solutions. Applications that account for over 10% of revenue are primarily software related to networking and data processing platforms. Applications include collaboration tools (unified communications, Cisco TelePresence video conferencing) as well as AppDynamics and Internet of Things software. The cybersecurity product category generates more than 5% of the company's revenue and includes network security, email security, identity and access, advanced threat protection, and unified exposure management products. In addition, Cisco offers consulting services. Cisco's total revenue in fiscal 2020 was nearly $ 50 billion. The company is expanding its research and development (R&D) investments in areas such as the cloud platform, remote collaboration platform, analytics and telecommunications technologies.

The Hewlett Packard Enterprise Company (commonly referred to as HPE) is an American multinational enterprise information technology company based in San Jose, California,[2] founded on 1 November 2015 as part of splitting of the Hewlett-Packard company. HPE is a business-focused organization with two divisions: Enterprise Group, which works in servers, storage, networking, consulting and support, and Financial Services. On 4 December HPE reported FY2018 net revenue of $30.9 billion, up 7% from the prior year period.

IBM (International Business Machines) ia an american electronic corporation, one of the world's largest manufacturers of all types of computers and software, one of the largest providers of global information networks. The corporation ranks sixth in the list of the largest companies in the world. Headquartered in Armonk, New York, USA. The story begins in the 19th century. IBM manufactures and sells hardware and software, services (hosting, consulting) in the areas from mainframes to nanotechnology.

McAfee is a global organization with a 30-year history and a brand known the world over for innovation, collaboration and trust. The company was founded in 1987 as McAfee Associates, named for its founder John McAfee, who resigned from the company in 1994.
As a leading-edge cybersecurity company, McAfee provides advanced security solutions to consumers, small and large businesses, enterprises, and governments. Security technologies from McAfee use a unique, predictive capability that is powered by McAfee Global Threat Intelligence, which enables home users and businesses to stay one step ahead of the next wave of fileless attacks, viruses, malware, and other online threats. McAfee is: ■ 622 million total endpoints
■ 97 million enterprise endpoints
■ 525 million consumer endpoints
■ 69,000 enterprise customers
■ 7,000 employees
■ 189 countries
■ 151 Security Innovation Alliance partners
■ 80% of Fortune 100 firms
■ 75% of Fortune 500 firms
■ 64% of Global 2000 firms
■ 87% of world’s largest banks
■ 54% of Top 50 retailers
■ 1,550+ security patents worldwide

Oracle Corporation is an american multinational computer technology corporation headquartered in Redwood Shores, California. The company specializes primarily in developing and marketing database software and technology, cloud engineered systems, and enterprise software products — particularly its own brands of database management systems. In 2018, Oracle was the third-largest software maker by revenue, after Microsoft and Alphabet. The company also develops and builds tools for database development and systems of middle-tier software, enterprise resource planning (ERP) software, customer relationship management (CRM) software, and supply chain management (SCM) software. Source: https://en.wikipedia.org/wiki/Oracle_Corporation