Earning a certification costs time, money, and study effort. Choosing the wrong one means less return on that investment. The five certifications here are selected based on their presence in employer job postings, average salary premiums cited in industry reports, and career longevity rather than just being current. They cover networking, security, cloud, and systems administration, the four areas where certified professionals command consistent demand.
| Certification | Level | Best For | Rating |
|---|---|---|---|
| CompTIA Security+ | Mid | Security, DoD roles | 4.9/5 |
| Cisco CCNA | Mid | Networking careers | 4.8/5 |
| AWS Solutions Architect Associate | Mid | Cloud architecture | 4.8/5 |
| Microsoft Azure Administrator (AZ-104) | Mid | Azure enterprise roles | 4.7/5 |
| CompTIA Network+ | Entry-mid | Networking foundation | 4.6/5 |
CompTIA Security+ — The baseline security credential
Security+ is the entry point for cybersecurity roles and is listed as a baseline requirement under the US DoD 8570/8140 mandate, making it effectively required for anyone working in federal IT security. It covers threat management, cryptography, identity management, network security, and compliance. A single exam (SY0-701 as of 2026) with a 392-dollar fee. The security workforce gap means Security+-certified candidates in most metro areas find hiring conditions favorable. It pairs naturally with A+ and Network+ in a CompTIA career progression.
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Cisco CCNA — The networking industry standard for mid-level roles
The Cisco Certified Network Associate credential covers IP addressing, VLANs, routing protocols (OSPF, EIGRP), WAN technologies, security fundamentals, and automation. It was consolidated into a single exam (200-301) in 2020, which improved its accessibility compared to prior versions. Network administrator and network engineer roles at companies using Cisco infrastructure, which represents a large share of enterprise networks, list CCNA as a preferred qualification. Study materials are extensive and the Cisco community provides strong peer support resources.
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AWS Solutions Architect Associate — The most hired cloud credential
The SAA-C03 exam tests the ability to design resilient, cost-optimized, secure AWS architectures. It is consistently among the top-cited credentials in cloud architect and DevOps job postings. At 150 dollars the exam fee is lower than most enterprise certifications. Passing it typically requires 2 to 3 months of study plus hands on time in the AWS console. The three-year validity and high renewal volume means maintaining it is straightforward. Salary surveys from Dice and Global Knowledge consistently place AWS SAA among the top five highest-paying IT certifications.
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Microsoft Azure Administrator AZ-104 — Enterprise cloud for Microsoft-heavy environments
AZ-104 validates the ability to manage Azure subscriptions, implement storage, deploy virtual machines, configure networking, and monitor cloud environments. A large share of Fortune 500 companies run hybrid Azure environments, making this certification directly applicable in enterprise IT roles. The 165-dollar exam requires approximately 4 to 6 weeks of study for candidates with some prior Windows Server or Azure familiarity. Microsoft provides free learning paths on Microsoft Learn that cover all exam objectives, reducing required spending on third-party study materials.
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CompTIA Network+ — Vendor-neutral networking foundation
Network+ covers the OSI model, IP addressing, subnetting, wireless standards, cloud networking, and network security at a conceptual and applied level. It is vendor-neutral, meaning it covers principles applicable across Cisco, Juniper, Aruba, and other networking equipment rather than one vendor’s CLI. For professionals who want networking credentials without committing to the Cisco ecosystem, Network+ offers recognized foundational coverage. It is also listed in DoD 8570 requirements for IAT Level 1 positions, providing a pathway into government contracting work.
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How to Choose the Right Computer Certification
Map certifications to your current role and the role you want next rather than picking the most prestigious-sounding credential. A sysadmin targeting cloud migration projects should prioritize AWS SAA or AZ-104. A help desk technician moving into security should prioritize Security+. Networking roles at most organizations still value CCNA. Stack certifications in a logical progression: A+ then Network+ then Security+ is the CompTIA path; CCNA then CCNP is the Cisco path. Lateral jumps to unrelated certification tracks are harder to monetize in negotiations than building depth in one area.
For beginner-level options before tackling these mid-level credentials, see articles/best-computer-certifications-for-beginner. For setting up a productive study environment, see articles/best-compact-all-in-one-color-laser-printer. Our ranking methodology is described at methodology.
Frequently asked questions
Which IT certifications have the most impact on salary?+
Cloud and security certifications consistently appear at the top of IT salary surveys. AWS Solutions Architect Associate, Google Professional Cloud Architect, and CISSP show some of the highest average salary correlations in the Global Knowledge IT Skills and Salary Report. Cisco CCNA remains a strong mid-career networking credential. Salary impact depends heavily on local market conditions, current role, and whether the certification fills a gap in your existing skill set.
How often do IT certifications need to be renewed?+
Renewal schedules vary by certification body. CompTIA certifications (A+, Network+, Security+) are valid for three years and can be renewed through continuing education credits or by passing the current exam version. Cisco CCNA expires after three years and requires re-examination or passing a professional-level exam. AWS certifications expire after three years. Microsoft Azure and M365 certifications also use three-year cycles. Keeping a calendar reminder at the two-year mark provides enough lead time to renew without lapsing.