The Project Management Professional (PMP)® is the most important industry-recognized certification for project managers. The PMP certification is not industry-specific, it is a global certification attesting to the candidates ability to speak to, understand, and apply the PMP principles. As a PMP, you can work in virtually any industry, with any methodology and in any location.
CompTIA provides premier, vendor-neutral certifications to help IT professionals stay ahead of the information technology curve curve. It validates expert knowledge in the latest technology trends and the ability to work with an extensive variety of existing and emerging technologies.
Microsoft has been providing certifications since the early-1990s. I received my first MCP certification in 1994 when I passed the Microsoft DOS exam. The required exams for my 1995 MCSE certification were: DOS, Windows for Workgroups 3.11, NT Workstation 3.1, NT Server 3.1, SQL Server or Microsoft Mail 3.2, and TCP/IP. I also completed the Microsoft Certified Trainer (MCT) certification around the same time.
I kept my certifications current until 2006, when I moved into a full-time project management role.
Back in the day Cisco offered five certifications: CCNA, CCDA, CCNP, CCDP. and CCIE. They still offer the same certifications today, but each one has at least five specialization areas to choose from. I completed these certifications to compliment my Microsoft knowledge. It proved helpful when teaching Microsoft engineering classes as well as during various consulting projects.