SAP is the leading provider of enterprise resource planning (ERP) software used to integrate back-office functions such as distribution, accounting, human resources, and manufacturing. The backbone of SAP's products has been its On-Premise offerings, spearheaded by its Business Suite, which includes ERP and customer relationship management (CRM) software, among others. Year founded: 1972 Revenue: $17.6 billion (2014) NYSE: SAP

Huawei is a global leader of ICT solutions. Huawei's strategy in the enterprise domain focuses on close cooperation and integration with partners to deliver a wide range of highly efficient customer-centric ICT solutions and services that are based on a deep understanding of customer needs. In line with their portfolio covers enterprise networking, unified communications & collaboration (UC&C), Cloud Computing & data center, enterprise wireless, network energy and infrastructure services.

Vodafone is a British multinational telecommunications company, has its headquarters in London and with its registered office in Newbury, Berkshire.Among mobile operator groups globally, Vodafone ranked fifth by revenue and second (behind China Mobile) in the number of connections (435.9 million) as of 2014.

Ericsson provides services, software and infrastructure in mobility, broadband and the cloud that enable the communications industry and other sectors to do better business, increase efficiency, improve their users' experience and capture new opportunities.Year founded: 1876Revenue: $26.8 billion (2014)NASDAQ: ERIC

Nokia is an innovation leader in the technologies that connect people and things. We tap into the power of connectivity by combining network infrastructure, software and services with advanced technologies for smart devices. From the transistor to Virtual Reality, our people and inventions have transformed how the world connects and communicates. We are focused on two business areas: - Our four networks business units are leading the change to smart, virtual networks with one seamless service - Our technologies business unit focuses on advanced R&D to reimagine the way technology blends into everyday life