I’m part of the expert team at Proximo 3, a specialist Microsoft consulting firm. We offer consultancy and advice on Dynamics 365 CRM and Power Platform projects. I’m passionate about applying change management to CRM projects and hold a certified Prosci practitioner qualification.

Since 2017, I’ve been a Microsoft Business Applications MVP specialising in Dynamics 365, Power Platform and Copilot Studio.

I’m part of the expert team at Proximo 3, a specialist Microsoft consulting firm. We offer consultancy and advice on Dynamics 365 CRM and Power Platform projects. I’m passionate about applying change management to CRM projects and hold a certified ... Show more

Joseph Guadagno is a Senior Vice President of IT, Microsoft Developer Services MVP, and international speaker with more than 25 years of experience leading high‑performing engineering organizations. He specializes in modernizing software delivery, scaling engineering culture, and helping teams adopt AI‑assisted development practices that accelerate innovation.

Joseph has delivered hundreds of sessions across the United States and internationally on .NET, Azure, cloud architecture, engineering leadership, and developer productivity. He is a long‑time community builder—former President and Vice President of the .NET Foundation, founder of the Southeast Valley .NET User Group, and organizer of Desert Code Camp.

He also created MoreSpeakers.com, a mentorship platform that connects new speakers with experienced presenters to grow the next generation of technical storytellers.

Joseph brings a rare blend of executive leadership, hands‑on technical expertise, and community passion to every stage.

Joseph Guadagno is a Senior Vice President of IT, Microsoft Developer Services MVP, and international speaker with more than 25 years of experience leading high‑performing engineering organizations. He specializes in modernizing software delivery, sc... Show more

Leon Gordon is a data and AI leader, and the founder and Principal Data & AI Architect at Onyx Data, a Microsoft-focused data and AI consultancy and Microsoft Fabric Featured Partner. He is a six-time Microsoft MVP, a member of the Forbes Technology Council, a Gartner Peer Community Ambassador, and an alumnus of the Oxford Saïd AI Programme.

He writes on data and AI as a Forbes Technology Council member, an Executive Contributor to Brainz Magazine, a contributor to The AI Journal, and a Thought Leader in Data Science for the Global AI Hub, and is a member of AI4C.

He founded DataDNA, a global data community of more than 28,000 members across 50+ countries, and founded and organises the Microsoft Fabric UK User Group, now over 15,000 strong. For more than a decade he has helped organisations improve business performance, use data more intelligently, and navigate what artificial intelligence and large-scale data actually mean in practice. Self-taught and without a degree, he brings that route into his community and coaching work.

Leon speaks internationally on Microsoft Fabric, enterprise AI agents, and data governance, and publishes two LinkedIn newsletters on Microsoft AI and data and on AI governance for boards and data leaders.

Leon Gordon is a data and AI leader, and the founder and Principal Data & AI Architect at Onyx Data, a Microsoft-focused data and AI consultancy and Microsoft Fabric Featured Partner. He is a six-time Microsoft MVP, a member of the Forbes Technology ... Show more

Joinal is an experienced Data Science professional with a interest on building solutions with quick prototypes, community engagements and influencing technology adoption. Brings strong technical understanding, experienced in managing cross functional teams of data scientists, data engineers, backend developers and SRE delivering end-to-end ML projects, recruiting and mentoring engineers across levels, streamlining ML & Data workflows for high performing teams, setting up best practices, and developing highly performant and reliable MLOps & Data platforms supporting end to end ml projects and analytics usecases.

Joinal is an experienced Data Science professional with a interest on building solutions with quick prototypes, community engagements and influencing technology adoption. Brings strong technical understanding, experienced in managing cross functional... Show more

I started my career in a service desk role, which quickly sparked my interest in how technology is built, operated, and scaled. From there, I moved into data center hosting where I gained a solid understanding of infrastructure, reliability, and what it takes to keep critical environments running. I don’t have any formal education in IT, but I’ve always been a lifelong learner who grows through curiosity, hands‑on experience, and a drive to constantly improve.

Almost a decade ago, I discovered my passion for the cloud and specialized in Microsoft Azure. Since then, I’ve focused on modern Ops, platform engineering, and enabling teams by taking ideas from early concepts into secure, scalable, production‑ready solutions. Over the years, I’ve expanded my expertise across data, AI, and IoT and IIoT, and I most often work with clients in the role of Solution Architect, helping them design and build practical, outcome‑focused architectures tailored to real enterprise needs.

I’ve worked across a wide range of domains including defense, public sector, manufacturing, and energy, which has shaped how I approach architecture, security, and complex enterprise environments. I also contribute to the open‑source and enjoy collaborating with others to advance how we build and deliver modern solutions.

🗣 Sharing knowledge is a big part of who I am. I’m passionate about public speaking and mentoring, and I enjoy helping others grow by making technology more accessible and actionable.

Today, I work with enterprise‑scale AI, data, and IIoT solutions with large companies, turning ideas into real, measurable impact.

I started my career in a service desk role, which quickly sparked my interest in how technology is built, operated, and scaled. From there, I moved into data center hosting where I gained a solid understanding of infrastructure, reliability, and what... Show more

During 20+ years spent in IT industry, I had a privilege to wear all possible hats, acting as a software developer, UX designer, university lecturer, startup entrepreneur, CIO and as a delivery manager at S&P500 engineering company. Creating software always was and remains my biggest passion. I stay hands-on by delivering PoC and MVP to clients, diving into all aspects of modern technology, be it cloud computing, blockchain or AI. Originally from Estonia, since 2016 I live in Switzerland and in free time I enjoy doing yoga and snowboarding.

During 20+ years spent in IT industry, I had a privilege to wear all possible hats, acting as a software developer, UX designer, university lecturer, startup entrepreneur, CIO and as a delivery manager at S&P500 engineering company. Creating software... Show more

Pamela Paterson, MS, CBAP, PMP, is a speaker, best-selling author, and senior tech consultant specializing in business systems analysis and project management. With a strong background in systems engineering and experience working with over 100 organizations, Pamela has delivered workshops, webinars, and presentations worldwide and authored 10 books, including two international best-sellers. Pamela has also taught project management for over ten years in Toronto, Canada. In 2023, 2024, and 2025 she stands out as one of the most active speakers on Sessionize. For more details, visit her LinkedIn profile https://www.linkedin.com/in/pamelapaterson/, or contact her at pamelatheba@gmail.com.

Pamela Paterson, MS, CBAP, PMP, is a speaker, best-selling author, and senior tech consultant specializing in business systems analysis and project management. With a strong background in systems engineering and experience working with over 100 organ... Show more

Yishai Beeri likes to solve problems, and that’s why he was so fascinated with programming when first encountered Logo back in the 80s, where the possibilities seemed endless.

He has made it a focus of his career to solve complex programming problems, as a consultant and entrepreneur. Between 2013 and 2020, Yishai worked in the CTO office of a fast moving cloud security startup, and after its acquisition in the Cloud Security unit of a networking giant. In 2020 Yishai joined LinearB to focus on Developer Productivity and Experience. As CTO he engages with hundreds of engineering leaders and helps build products that answer the industry's core questions about AI & Productivity for software engineering.

Yishai Beeri likes to solve problems, and that’s why he was so fascinated with programming when first encountered Logo back in the 80s, where the possibilities seemed endless. He has made it a focus of his career to solve complex programming probl... Show more

Máté is passionate about technology and how it can enhance the way people work and collaborate. He began his Power Platform career as a citizen developer, and today works as an Intelligent Automation & AI Architect at Xebia, helping organizations get real value from Copilot Studio, M365 Copilot, and the wider Power Platform. He leads the Hungary Power Platform User Group and co-organizes community events, sharing his expertise at conferences on AI adoption, low-code development, and user experience.

Beyond technology, Máté advocates for the role of soft skills in tech - fostering collaborative groups, mentoring, and helping professionals identify and leverage their transferable skills. He believes that success in digital transformation is not just about tools but also about people and communication. He prioritizes work-life integration, balancing professional projects with hobbies such as hiking, SUP, cooking, and live music.

He's also a Microsoft MVP, Microsoft Certified Trainer, and volunteer photographer, continuously blending his love for technology with creativity.

Máté is passionate about technology and how it can enhance the way people work and collaborate. He began his Power Platform career as a citizen developer, and today works as an Intelligent Automation & AI Architect at Xebia, helping organizations get... Show more

Prerit is a Cloud-Native Platform Leader with extensive experience designing and scaling secure, resilient cloud infrastructures. As the former CTO of KubeCloud, he built no-code solutions bridging Cloud, DevOps, and SRE, leading the company to a successful acquisition. Currently, he drives cloud-native, observability, CI/CD, and AI initiatives as a technical leader at Groupon.

Prerit is a Cloud-Native Platform Leader with extensive experience designing and scaling secure, resilient cloud infrastructures. As the former CTO of KubeCloud, he built no-code solutions bridging Cloud, DevOps, and SRE, leading the company to a suc... Show more

Hi! I'm David. Sometimes a speaker, sometimes a listener, and always interested in web technologies. I work on complex projects involving anything related to API's & AI. I am Microsoft MVP in Foundry

Also, I am a co-organizer of GDG Ponferrada and Global AI Ponferrada.

Hi! I'm David. Sometimes a speaker, sometimes a listener, and always interested in web technologies. I work on complex projects involving anything related to API's & AI. I am Microsoft MVP in Foundry Also, I am a co-organizer of GDG Ponferrada and... Show more

Becky is the owner of Savvy Technical Solutions, a consulting company based in the St. Louis area. She helps her clients build custom solutions on the Microsoft platform of products including Microsoft 365 and the Power Platform. She's a 17-time SharePoint MVP, Microsoft Certified Trainer, and has authored numerous on-demand courses as well as Microsoft exams. Becky is married with 3 children in elementary, middle and high school. Her primary hobby is taking kids to and from after-school activities.

Becky is the owner of Savvy Technical Solutions, a consulting company based in the St. Louis area. She helps her clients build custom solutions on the Microsoft platform of products including Microsoft 365 and the Power Platform. She's a 17-time Shar... Show more

Pragati Jain is the Founder and Principal Consultant at Datavibe Solutions Ltd, where she leads end-to-end Microsoft Fabric implementations for global organizations. As a Microsoft Data Platform MVP and MCT, Pragati specializes in bridging the gap between intricate technical engineering and executive data strategy.

At Datavibe, she architects migrations from legacy Power BI environments to modern Fabric ecosystems, leveraging the full analytics stack- including Lakehouse, Data Engineering, and Real-Time Analytics. Her work is defined by a commitment to high-impact storytelling and technical excellence in PySpark, SQL, and advanced Fabric & Power BI development.

A recognized Superuser in the Microsoft Fabric Community, Pragati has spoken at over 80 global events, including the Microsoft Fabric Community Conference, PASS Data Summit, and SQLBits. Awarded the Sessionize Most Active Speaker badge four years running (2022–2025), she is a dedicated advocate for women in tech and mentors the next generation of data professionals.
Beyond data, Pragati is a trained Indian classical singer, painter, and hiking enthusiast.

📌 MVP Profile: https://mvp.microsoft.com/en-us/PublicProfile/5004163
🌐 Consulting: https://datavibe.co.uk

Pragati Jain is the Founder and Principal Consultant at Datavibe Solutions Ltd, where she leads end-to-end Microsoft Fabric implementations for global organizations. As a Microsoft Data Platform MVP and MCT, Pragati specializes in bridging the gap be... Show more

Microsoft MVP Alumni and SAFe PO/PM certified professional with a strong passion for building impactful mobile applications and exploring the evolving landscape of AI. With over seven years of experience in the Xamarin ecosystem and now deeply engaged in .NET MAUI, has consistently focused on delivering high-quality, cross-platform solutions that balance performance, usability, and scalability.
Author of AI-Enabled Apps with .NET MAUI: How to Build Cross-Platform .NET MAUI Apps with the Latest AI Capabilities, bringing together hands-on development experience and a forward-looking perspective on integrating AI into modern applications.
Particularly passionate about UX and UI design, with a keen eye for creating intuitive, user-centered experiences across platforms. In recent years, has specialized in UI testing, best practices, continuous integration, and performance optimization within .NET MAUI projects, helping teams build more robust and maintainable applications.
Naturally curious and continuously learning, with a growing interest in AI and machine learning, especially in how these technologies can enhance real-world products. More recently, has expanded focus into product management and digital product strategy, combining technical expertise with a user- and business-oriented mindset to drive meaningful product outcomes.

Microsoft MVP Alumni and SAFe PO/PM certified professional with a strong passion for building impactful mobile applications and exploring the evolving landscape of AI. With over seven years of experience in the Xamarin ecosystem and now deeply engage... Show more

Microsoft MVP & MVS. Apasionado por la tecnología, iniciándome en el mundo de la programación como hobby con calculadoras programables en el año 1982... Trabajando con Microsoft CRM desde el año 2004, evolucionando hacia el mundo Microsoft 365 y la Power Platform. Cofundador de la primera iniciativa de comercialización en España de Microsoft Dynamics CRM como servicio, con la versión 4.0, bajo el nombre comercial CRM Dinámico.

Microsoft MVP & MVS. Apasionado por la tecnología, iniciándome en el mundo de la programación como hobby con calculadoras programables en el año 1982... Trabajando con Microsoft CRM desde el año 2004, evolucionando hacia el mundo Microsoft 365 y la P... Show more

Abid Jamil is a software engineering leader, author, and international technology speaker based in Riyadh, Saudi Arabia, with over a decade of experience building and scaling technology products.

Currently an Engineering Manager at Gathern, he leads engineering teams across growth, fintech, and payments, focusing on scalable systems, engineering excellence, and delivering measurable business outcomes.

Throughout his career, Abid has worked across fintech, e-commerce, logistics, travel, classifieds, and education. His expertise spans engineering leadership, software architecture, system design, cloud computing, mobile development, and performance engineering.

Beyond his professional career, Abid is an active contributor to the global technology community. He has spoken at international conferences, including droidcon, DevFest, and AWS Community Day. He is also a former university lecturer and has authored more than 18 research publications.

He is the author of *The Engineer's Operating System: 18 Lessons to Build Your Skills, Visibility, Network, and Leadership* and *Crack Backend Interviews: A Progressive Guide from Junior Backend Engineer to Head of Engineering*.

Through his books, speaking engagements, and writing, Abid shares practical lessons from real-world engineering challenges, career development, and leadership, helping engineers grow beyond writing code and build meaningful, sustainable careers.

Learn more at https://abidjamil.com.

Abid Jamil is a software engineering leader, author, and international technology speaker based in Riyadh, Saudi Arabia, with over a decade of experience building and scaling technology products. Currently an Engineering Manager at Gathern, he lea... Show more

Senior Agile Coach, Jean-Yves Klein has worn many hats: developer, project manager, program director, head of IT… This diverse background gives him a 360° view of agility — from hands-on delivery to executive strategy.

Certified in PMI, SAFe, and Disciplined Agile, he has coached teams across IT, mechanical engineering, electronics, marketing, and legal. His approach is always tailored to the team, the project, and the organization — no cookie-cutter solutions here.

A passionate educator, he has designed over 10 Serious Games, including several with LEGO, to bring Agile, SAFe, DevOps, and key roles like Product Owner and Scrum Master to life. With him, learning is hands-on, fun, and unforgettable.

Senior Agile Coach, Jean-Yves Klein has worn many hats: developer, project manager, program director, head of IT… This diverse background gives him a 360° view of agility — from hands-on delivery to executive strategy. Certified in PMI, SAFe, and ... Show more

💫🙆🏻‍♀️ Founder @ Stratadom
🎨📊 Data visualization and AI training
🧑‍🏫🤖 IA/ML Instructor @ LinkedIn Learning
🏅💻 Microsoft MVP Data Platform & AI Platform

I trust the power of data and persuasive communication.

Data visualization services: www.uxforpowerbi.com
More info: www.stratadom.com

💫🙆🏻‍♀️ Founder @ Stratadom 🎨📊 Data visualization and AI training 🧑‍🏫🤖 IA/ML Instructor @ LinkedIn Learning 🏅💻 Microsoft MVP Data Platform & AI Platform I trust the power of data and persuasive communication. Data visualization ser... Show more

Sandra is a Microsoft MVP, speaker, and entrepreneur driven by one question: how can digital work feel more intuitive, motivating, and human? As founder of a company rooted in gaming and interactive experiences, she brings game thinking into the Microsoft ecosystem—from Microsoft 365 and Copilot experiences to Business applications and Collaboration workflows. Sandra translates proven game UX patterns into adoption-friendly solutions that help people navigate complexity with confidence.

Beyond technology, Sandra is a passionate community builder. She actively creates spaces where people connect, learn, and grow and she is especially committed to helping new speakers find their voice. Because her own speaker journey started late, she knows how intimidating the stage can feel. As a woman in tech, she also understands what it takes to be seen and taken seriously, and she mentors others to step forward, build confidence, and shape their own path in the community.

Sandra is a Microsoft MVP, speaker, and entrepreneur driven by one question: how can digital work feel more intuitive, motivating, and human? As founder of a company rooted in gaming and interactive experiences, she brings game thinking into the Micr... Show more

Brian has worked with data and analytics for more than two decades - varying projects on both size and complexity.

Now, by combining deep experience with a human approach to data and analytics, and a deep understanding of platform implementations, Brian build solutions that deliver actual change for people, for business, for everyone

Brian is a Data Platform MVP and Microsoft Recognized Fasttrack Solution Architect.

Brian loves data and is always trying to glue the business and tech together using his knowledge and experience.
He is always open to meet new people and help them to get better tomorrow.

Brian has worked with data and analytics for more than two decades - varying projects on both size and complexity. Now, by combining deep experience with a human approach to data and analytics, and a deep understanding of platform implementations,... Show more

Pat Petersen is a Director at RSM US LLP, a leading provider of audit, tax and consulting services. He has more than 20 years of experience in Information Technology and leads the Collaboration and Voice consulting practice at RSM. Pat specializes in Microsoft 365 platforms, such as Microsoft Teams, SharePoint, PowerApps, Power Automate, and Copilot. In addition, he has extensive knowledge and experience in administration and training on these platforms and has conducted various customer immersion experiences and training sessions for RSM clients.

Pat Petersen is a Director at RSM US LLP, a leading provider of audit, tax and consulting services. He has more than 20 years of experience in Information Technology and leads the Collaboration and Voice consulting practice at RSM. Pat specializes in... Show more

Laurent is a senior Microsoft 365 consultant and governance-oriented architect, focused on Modern Workplace, Microsoft 365 Copilot, Copilot agents at scale.

He works with organizations that want to move fast with Copilot and agents — without losing control. His daily work revolves around designing clear governance frameworks for Copilot usage, agent lifecycle management, data exposure control, licensing strategy, and tenant-wide Modern Workplace governance.

With a strong ability to bridge IT, security, and business teams, he specializes in turning innovation into structured, secure, and sustainable deployments — going far beyond demos and POCs.

Strongly advocating a human-first but governance-driven approach, Laurent believes Modern workplace and AI success is not about features, but about decision clarity, guardrails, and shared responsibility across the organization.

As a Microsoft MVP, he regularly shares pragmatic, no‑nonsense insights on Copilot governance, agents strategy, and Modern Workplace governance at international conferences and user groups, speaking French, English, and Japanese.

Laurent is a senior Microsoft 365 consultant and governance-oriented architect, focused on Modern Workplace, Microsoft 365 Copilot, Copilot agents at scale. He works with organizations that want to move fast with Copilot and agents — without losin... Show more

Vijaykumar Jangamashetti (VJ), is a seasoned professional with 18 years of experience in Data Analytics, Cloud, and AI. Currently a Trusted Advisor, Staff Cloud Consulting Architect, and Program Manager at Google, he specializes in guiding customers through their digital transformation journeys. VJ's expertise lies in helping customers design, architect, migrate, and modernize their infrastructure, data warehouses, and applications on Google Cloud, enabling them to fully harness the power of cloud computing. Furthermore, VJ offers valuable insights into AI and Generative AI (GenAI), empowering customers to explore new opportunities and achieve success with their AI endeavours. VJ is also a Startups Mentor in Google For Startups Accelerator (GFSA) programmme and holds Google Cloud 13X certifications.

Vijaykumar Jangamashetti (VJ), is a seasoned professional with 18 years of experience in Data Analytics, Cloud, and AI. Currently a Trusted Advisor, Staff Cloud Consulting Architect, and Program Manager at Google, he specializes in guiding customers ... Show more

Hi, I’m Elena Drakulevska, a Principal Product Manager at Microsoft working on Power BI Core Visuals, where I help shape the future of reporting and data visualization.

I’m also an international speaker, Microsoft MVP alumna, and founder of MoonStory, a platform focused on UX Design and Data Visualization. Through conferences, mentoring, blogging, and community initiatives, I share my mission of making technology more human, empowering, and joyful. ✨

Hi, I’m Elena Drakulevska, a Principal Product Manager at Microsoft working on Power BI Core Visuals, where I help shape the future of reporting and data visualization. I’m also an international speaker, Microsoft MVP alumna, and founder of MoonSt... Show more

Daniel is a Microsoft .NET MVP and software consultant at Lean TECHniques. He helps teams deliver high-quality software while adopting modern practices such as effective CI/CD, automated testing, AI usage, and product management. With experience spanning multiple industries, including finance, retail, and agriculture, he has served as a technical coach, agile coach, and tech lead, with a primary background as a software developer. Outside of work, he enjoys playing piano and guitar, swing dancing, and game development.

Daniel is a Microsoft .NET MVP and software consultant at Lean TECHniques. He helps teams deliver high-quality software while adopting modern practices such as effective CI/CD, automated testing, AI usage, and product management. With experience span... Show more

Richard Harbridge is a Principal Industry Advisor on Microsoft 365 and ShareGate as well as a long-standing Microsoft MVP. Renowned for simplifying the complex, Richard equips IT, executives, and business leaders with three essentials: clarity about Microsoft 365’s evolving capabilities, confidence in responsibly implementing and governing new technologies, and the connections that amplify success across partners, customer communities and Microsoft itself.

Over the past decades he has:
• Advised 200+ enterprises on Microsoft 365 strategy, AI governance and employee experience.
• Delivered 450 + keynotes, workshops and conference sessions across five continents.
• Empowered millions of employees with simpler, more secure Microsoft 365 experiences, while helping partners unlock $300+ million in new revenue.
• Leads CIO think tanks and employee-experience forums while serving on research and community leadership councils shaping the future of work.

Whether architecting AI rollouts, moderating executive roundtables, or writing practical frameworks, Richard’s focus is unwavering: turn technology potential into lasting business impact.

Richard Harbridge is a Principal Industry Advisor on Microsoft 365 and ShareGate as well as a long-standing Microsoft MVP. Renowned for simplifying the complex, Richard equips IT, executives, and business leaders with three essentials: clarity about ... Show more

Geetha is a Solutions Architect and Customer Success professional specializing in big data management , storage , Kubernetes and Durable execution, with expertise in cloud-native and on-premises solutions. She ensures customer success and maturity by delivering effective, simplified solutions.

Geetha is a Solutions Architect and Customer Success professional specializing in big data management , storage , Kubernetes and Durable execution, with expertise in cloud-native and on-premises solutions. She ensures customer success and maturity by... Show more

Passionnée par la collaboration, j'explore depuis une dizaine d'années les nouveautés proposées par Microsoft et leur impact sur les utilisateurs.

Passionnée par la collaboration, j'explore depuis une dizaine d'années les nouveautés proposées par Microsoft et leur impact sur les utilisateurs. Show more

Jacob Duijzer is an Engineering Manager at BIMcollab with 25+ years of experience in software engineering and technology leadership. He works at the intersection of engineering excellence, reliability, and team effectiveness, with a strong focus on DevOps transformation, platform leadership, and practical adoption of SRE and chaos engineering practices.

Over the years, Jacob has helped organizations improve how teams deliver and learn, including large scale transformations across multiple teams. He regularly shares practical lessons through talks and workshops on topics such as Team Topologies, Domain-Driven Design, fast flow, and resilient cloud-native systems.

Known for his grounded and hands-on style, Jacob translates complex ideas into clear steps teams can apply right away, helping technical audiences move from theory to measurable improvement.

Jacob Duijzer is an Engineering Manager at BIMcollab with 25+ years of experience in software engineering and technology leadership. He works at the intersection of engineering excellence, reliability, and team effectiveness, with a strong focus on D... Show more

Raniz is a programmer, architect, speaker and coach at factor10. He is a problem solver who keeps track of the bigger picture. He is prestigeless, likes to get into new domains, and loves sharing knowledge and ideas. Raniz has worked with system- and software architecture at several companies since 2010 and has been with factor10 since 2021. When not working he's into beer brewing, sourdough bread, 3D printing and triathlons.

Raniz is a programmer, architect, speaker and coach at factor10. He is a problem solver who keeps track of the bigger picture. He is prestigeless, likes to get into new domains, and loves sharing knowledge and ideas. Raniz has worked with system- and... Show more