Mark Wilson

Mark Wilson is a globally recognized thought leader and international speaker in mainframe security and technology, as well as a passionate advocate for all things Z. He has more than 40 years’ of experience across numerous industries and diverse mainframe environments. Mark serves as the Chief Editor and Producer of Cheryl Watson's Tuning Letter and the Technical Director at Vertali. Mark is also the Region Manager for Guide Share Europe (GSE) UK and has been awarded IBM Champion status for multiple years. For more information email: info@vertali.com

Cheryl Watson’s Tuning Letter Delivers z/OS Tuning, Hardware Picks, and Performance Tips

Aug 5, 2025 | Cheryl Watson's Tuning Letter, IBM z Systems, IBM z17, IT Infrastructure, System Administration, z/OS, z/OS Tuning

We are delighted to announce that Cheryl Watson's Tuning Letter 2025 No.2 is now available. If you haven't already subscribed, now is your chance to discover the most comprehensive body of practical and impartial z/OS, and MVS tuning and measurement advice ever...

Impartial z/OS and MVS tuning and measurement advice: Cheryl Watson’s Tuning Letter is live

May 6, 2025 | Cheryl Watson's Tuning Letter, Mainframe, z/OS

If you work with mainframes, keep reading and catch the latest from Cheryl Watson’s Tuning Letter. The quarterly Tuning Letter offers comprehensive, practical, and impartial z/OS and MVS tuning and measurement advice. We deliver the insights you need in an...

Wilson’s Week: SHARE Washington D.C. is a Capital Success

Mar 5, 2025 | Events, Networking

The world’s attention shifted to Washington D.C. recently – I mean the mainframe world, of course, as the US capital played host city to the latest SHARE.org conference. I had the pleasure of attending this excellent, well-run event, which brought together industry...

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