About the authors

Cesar Saavedra has been working in the IT industry since 1990 and holds a master of science degree in computer science and an MBA. He has worked as a developer, consultant, technical seller, and technical marketer throughout his career. He currently does technical product marketing for Red Hat JBoss EAP, Eclipse MicroProfile, OpenJDK, Quarkus, and Jakarta EE. He also manages technical marketing for the runtimes, integration, Business Process Management (BPM), and rules management portfolio, and works closely with engineering and product management on thought leadership. Cesar has authored white papers, e-Books, and blog posts, and is a conference and webinar speaker, giving presentations to customers and partners.

Heiko W. Rupp is an open source enthusiast with more than a decade of experience working at Red Hat in the area of middleware monitoring and management. In this role, he has been project lead of the RHQ and Hawkular monitoring systems and has also contributed to various other projects, including Kiali.

Currently, he is helping to define the next route to be taken by Java microservices with his work on Eclipse MicroProfile. As such, he is the specification lead of the Eclipse MicroProfile Metrics effort and is also contributing to other specifications. Heiko has written the first German book about JBoss AS and one of the first German books on EJB3. He lives with his family in Stuttgart, Germany.

Jeff Mesnil is employed by Red Hat as a senior software engineer and currently works for JBoss, Red Hat's middleware division, on the WildFly and JBoss EAP application servers. He is a member of the core team in charge of developing the internals of the application servers and heads up its messaging subsystem (which provides the JMS API).

Previously, he contributed to the HornetQ messaging broker that was integrated into WildFly and EAP.

He is a proponent of open source development and all the code he writes, either professionally or privately, is available under open source licenses. Nowadays, it is mostly hosted on GitHub.

He has a keen interest in messaging systems and has written several open source libraries related to messaging.

Pavol Loffay is senior software engineer at Red Hat. Pavol is working on observability tools for microservice architectures. He is mostly involved in the tracing domain, where he is an active committer on the Jaeger and OpenTracing projects. He is also a member of the OpenTracing Specification Council (OTSC) and a lead for the MicroProfile-OpenTracing specification. He has authored many blog posts and given presentations at several conferences. In his free time, Pavol likes to climb mountains and ski steep slopes in the Alps.

Antoine Sabot-Durand is a Java champion who works for Red Hat, where he leads the Java EE, now Jakarta EE CDI, spec. He is involved in various projects linked to the CDI ecosystem, MicroProfile, and Jakarta EE. He is also a member of the Devoxx France committee. He lives in France with his wife and three children.

Scott Stark began his career in chemical engineering, got steered into parallel computers as part of his PhD work, and then made software his career, beginning with a stint in finance on Wall Street. He then got into open source with the fledgling JBoss company, working on the application server and Java EE. He has worked with microkernel efforts, the IoT, standards, Jakarta EE, Eclipse MicroProfile, and Quarkus. He lives in the Pacific Northwest with his wife.