The Linux Foundation offers industry-recognized, vendor-neutral certifications at multiple levels, covering key areas such as system administration, containers and cloud-native technologies, security, and development. Entry-level certifications include the Linux Foundation Certified IT Associate (LFCA) and Kubernetes & Cloud Native Associate (KCNA). The intermediate level features the Linux Foundation Certified System Administrator (LFCS). For containerized technologies, certifications include Certified Kubernetes Administrator (CKA), Certified Kubernetes Application Developer (CKAD), and Certified Kubernetes Security Specialist (CKS). Additional certifications address development and observability tools, such as the OpenJS Node.js Application Developer (JSNAD) and the Prometheus Certified Associate (PCA). All exams are delivered via online proctoring, allowing candidates to test from anywhere worldwide, with digital badges awarded as proof of skills. The certification paths are flexible and can be combined for progression, enabling professionals to strengthen their competitiveness in open source and cloud technology transformation. AAAdemy provides learning support closely aligned with the Linux Foundation’s official certification blueprint—including structured knowledge explanations, path planning, study strategies, and practice exams—helping candidates efficiently plan and achieve their certifications.