Certification is the formal attestation or confirmation of certain characteristics of an object, person, or organization. This confirmation is often, but not always, provided by some form of external review, education, assessment, or audit. Accreditation is a specific organization’s process of certification. CompTIA A+ Technician® Cisco Certified Network Associate (CCNA)® CompTIA Network+® Certified Information Systems Security Professional (CISSP)® Microsoft Certified Systems Engineer (MCSE)® Microsoft 365 Certified: Modern Desktop Administrator Associate®. Scroll down to view free and premium courses.