About ExamsTree
Independent IT certification experts helping professionals pass exams since 2011
Our Mission
ExamsTree was founded in 2011 with a single purpose: to make professional IT certification accessible to everyone, regardless of budget or geography. Our founders — a group of working systems administrators and network engineers — grew frustrated with expensive classroom courses and study materials full of outdated content. They believed that a focused, affordable PDF study guide built by practitioners, for practitioners, could outperform anything on the market.
Thirteen years later, more than 90,000 professionals across 140 countries have used ExamsTree materials to achieve certifications from Microsoft, Cisco, Amazon Web Services, CompTIA, Google, VMware, Oracle, and dozens of other vendors. We remain an independent, editorially autonomous team. We are not affiliated with or endorsed by any certification vendor — our only obligation is to you, the candidate.
How We Build Our Study Guides
Exam Blueprint Analysis
Each study guide starts with a rigorous review of the vendor's official exam objectives. Our content leads map every topic domain, weighting questions in proportion to their exam percentage.
Written by Active Practitioners
Questions are authored by certified professionals who work with the technology daily — not by technical writers reading whitepapers. Every contributor holds the certification they write for.
Peer Review and Technical Verification
Every question and answer explanation is reviewed by a second certified professional before publication. Disputed items go to a senior editorial board of three reviewers.
Continuous Updates
We monitor vendor announcements and retire or revise questions whenever exam objectives change. Customers who have already purchased a guide receive free updates for 12 months.
Meet the Editorial Team
David Mercer
Co-founder & Head of Content — CCIE #48120, CISSP
David spent 14 years as a senior network architect at a Fortune 500 financial services firm before founding ExamsTree. He leads content strategy and oversees all Cisco and security-track study guides.
Samira Rashed
Senior Editor — Microsoft MVP, MCM, Azure Solutions Architect Expert
Samira joined in 2013 after a decade building hybrid cloud platforms for European telecoms providers. She is responsible for all Microsoft certification tracks and manages the editorial review board.
James O'Sullivan
Cloud Practice Lead — AWS Certified Solutions Architect Pro, GCP Professional
James ran cloud infrastructure at two Dublin-based SaaS companies before joining ExamsTree in 2017. He owns the AWS, Google Cloud, and DevOps certification portfolios and personally holds 11 active cloud certifications.
Lena Kovács
Quality Assurance Lead — CISA, CRISC, CompTIA Security+ CE
Lena worked as an IT auditor and risk consultant in Budapest and Amsterdam for eight years before moving into technical publishing. She oversees the peer-review process and manages our accuracy guarantee programme.
Nikhil Kapoor
Database & ERP Editor — Oracle ACE Associate, OCP, SAP Certified
Nikhil brings 12 years of Oracle DBA and SAP BASIS consulting experience from projects across India, UAE, and the UK. He covers Oracle, SAP, and database administration certification tracks.
Maria Weiss
Community & Feedback Manager — PMP, ITIL 4 Managing Professional
Maria manages candidate feedback, coordinates our network of 200+ contributor reviewers, and ensures that customer-reported inaccuracies are triaged and resolved within 48 hours.
2011
Founded
90K+
Professionals Served
2,180+
Study Guides
140+
Countries
Editorial Independence & Accuracy Guarantee
ExamsTree is not affiliated with, sponsored by, or endorsed by any certification vendor. All study materials are created independently by our editorial team. If you identify a factual error in any of our guides, we commit to reviewing and resolving your report within 48 hours and issuing a corrected version at no charge. Our goal is a 100% accurate product — if we fall short, we make it right.
Have a Question?
Our support team typically responds within a few hours on business days.
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