Certifications

Data engineering has become a critical area in modern technology environments because organizations depend on reliable data systems for decision-making, automation, and digital operations. A professional data engineer works with large volumes of information and develops solutions that allow businesses to collect, process, store, and analyze data efficiently. The role requires knowledge of data platforms, cloud services, security practices, and system performance methods. A data engineer on Google Cloud focuses on building dependable data solutions that support different business needs. These professionals manage data pipelines, design storage approaches, maintain data…

AWS certification advice for data engineers changed substantially between the old Big Data Specialty era and 2025. AWS launched Data Engineer – Associate (DEA-C01) in 2024 and retired the Data Analytics and Database Specialty exams that same year. A 2025 guide should reflect that shift instead of treating every former Specialty as a current booking option. As of October 2026, the central role-based certification for engineers who ingest, transform, store and operate data pipelines is DEA-C01. Other AWS credentials can be useful where the job also involves architecture, software development,…

AWS Certified Data Engineer – Associate remains a current associate-level certification, and the DEA-C01 exam validates the practical work of building data pipelines, choosing and managing data stores, operating data systems, and applying security and governance. The current exam guide uses version 1.1, published in December 2025, with the same four core domains used in 2026. The credential is most useful for professionals who work with data ingestion, transformation, orchestration, storage, data quality, operational support, and secure access inside AWS. It is not a general analytics certificate; it is an…

AZ-400 is an advanced DevOps exam, not a general introduction to Agile or cloud development. Microsoft expects candidates to design and implement the systems that move work from an idea to production: collaboration and traceability, source control, build and release pipelines, security and compliance, and instrumentation. The exam assumes you can connect people, process, Git, automation, Azure, GitHub, and Azure DevOps into one delivery system. The English AZ-400 exam was updated on July 27, 2026 and currently has no listed retirement date. The weighting is unusually clear about where to…

The 300-435 ENAUTO exam changed materially in 2026. Effective February 3, Cisco moved ENAUTO to v2.0 and positioned it inside both CCNP Enterprise and CCNP Automation. The current exam remains 90 minutes, but the scope is broader than “know Python and call a REST API.” It now emphasizes device-level automation, controller-based workflows, operations, validation, and AI in automation across IOS XE, Meraki, Catalyst Center, Catalyst SD-WAN, ISE, and ThousandEyes. That shift changes preparation. Start with network automation fundamentals but treat them as engineering disciplines: source control, data models, idempotence, error…

Cisco 300-425 ENWLSD is no longer an active certification exam. Cisco retired Designing Cisco Enterprise Wireless Networks (300-425) on March 18, 2026 and identified 300-110 WLSD, Designing Cisco Wireless Networks, as its replacement. The change is more than a code update: wireless design now sits inside Cisco’s dedicated CCNP Wireless certification track rather than being treated as an Enterprise concentration in the old structure. That means anyone arriving at older 300-425 study material needs to separate historical knowledge from the current certification path. The former exam remains useful as a…

The 300-420 ENSLD exam is the CCNP Enterprise concentration focused on design rather than implementation. Cisco’s current v1.1 exam is 90 minutes and covers advanced addressing and routing solutions, advanced enterprise campus networks, WAN, security services, network services, Software-Defined Access, and automation-related design concepts. The wording changes the study method: you are often deciding among valid technologies based on requirements, not proving that one command is syntactically correct. Design questions reward trade-off thinking. Availability can increase complexity. Summarization can improve scale but hide detail. Centralization can simplify control while increasing…

ENARSI is one of the most practical CCNP Enterprise concentration exams because it asks candidates to reason about networks that are already complex, already carrying production traffic, and already capable of failing in several places at once. Cisco’s current 300-410 ENARSI v1.1 exam validates implementation and troubleshooting across advanced Layer 3 technologies, VPN services, infrastructure security, infrastructure services, and infrastructure automation. Passing 300-410 ENARSI earns the Cisco Certified Specialist – Enterprise Advanced Infrastructure Implementation certification and can satisfy the concentration requirement for CCNP Enterprise. The exam is currently 90 minutes,…

The Cisco 200-901 exam still exists, but the certification around it has changed. Cisco renamed the DevNet Associate certification to CCNA Automation. The exam number stayed 200-901, while the current exam name is Automating Networks Using Cisco Platforms (CCNAAUTO). Cisco describes the change at associate level as a new name for the same automation-focused certification path rather than a completely different credential. That makes older DEVASC articles partly historical and partly still useful. The underlying skills—software development, APIs, application deployment, security, scripting, testing, and infrastructure automation—remain central. What changed is…

Cisco’s active 200-201 CCNACBR v1.2 examination, Understanding Cisco Cybersecurity Operations Fundamentals, earns the CCNA Cybersecurity certification. Earlier materials use CBROPS and CyberOps Associate names, but the current issuer objectives cover security concepts, monitoring, host-based analysis, network intrusion analysis, and security policies and procedures. Use the current code and exam guide before selecting preparation resources. Many candidates underestimate how application-focused this exam is compared to purely theoretical tests. Cisco does not just want you to define terms. It wants to see that you can apply security concepts to realistic scenarios, interpret…

Amazon AWS SCS-C02 is no longer the current Security – Specialty blueprint. In 2026 AWS introduced SCS-C03, so candidates should not build a new study plan around the older SCS-C02 domain structure. The useful approach is to preserve the security knowledge that transfers, identify what the current exam emphasizes, and use the SCS-C03 guide as the source of truth for preparation. What changed with Amazon AWS SCS-C03 The current SCS-C03 blueprint organizes the exam into six domains: Detection at 16%, Incident Response at 14%, Infrastructure Security at 18%, Identity and…

AWS Certified Machine Learning Engineer – Associate is in a genuine transition period. The original MLA-C01 exam is no longer the right default for English-language candidates: AWS ended English delivery on September 28, 2026 and began beta delivery of MLA-C02 on September 29. MLA-C01 remains available in Japanese, Korean, and Simplified Chinese during the beta period, with AWS planning general availability for MLA-C02 in January 2027. That transition matters because the role definition has expanded. The updated AWS Certified Machine Learning Engineer – Associate now reflects both traditional machine-learning operations…

ITIL 4 is no longer the newest ITIL framework, but it remains relevant in 2026. PeopleCert is introducing ITIL (Version 5) through a phased transition, continues to make ITIL 4 available, and recognizes ITIL 4 certifications as valid prerequisites for higher-level Version 5 certifications. That means the right question is not whether ITIL 4 has suddenly become useless. The useful question is which ITIL 4 concepts still transfer, which Version 5 ideas expand them, and which certification decisions need to follow the current PeopleCert scheme rather than old ITIL 4…

AZ-140 is a specialized Azure certification because virtual desktop infrastructure sits at the intersection of cloud compute, networking, identity, storage, security, application delivery, user profiles, monitoring, and end-user experience. Microsoft’s current study guide expects candidates to plan and implement Azure Virtual Desktop infrastructure, identity and security, user environments and applications, FSLogix, monitoring, and operational management. The AZ-140 exam leads to the Azure Virtual Desktop Specialty credential. Microsoft classifies the role as intermediate and describes the target candidate as a server or desktop administrator with expertise in designing, implementing, managing, and…

Microsoft MS-900, Microsoft 365 Fundamentals, retired on March 31, 2026. Candidates can no longer schedule it. Microsoft now offers AB-900: Microsoft 365 Copilot and Agent Administration Fundamentals as the beginner credential for an AI-enabled Microsoft 365 environment. Anyone using an old MS-900 voucher or study plan should treat it as historical and move to the current AB-900 objectives. Do not treat AB-900 as a simple exam-code rename MS-900 emphasized cloud concepts, Microsoft 365 applications and services, security and compliance, and licensing and support. AB-900 assumes familiarity with core Microsoft 365…