Rimini Street Expands C-Suite Leadership for Growth with Appointment of Two Proven Industry Veterans as Chief Operating Officer and Chief Delivery Officer

Rimini Street, Inc., the software support and agentic AI ERP company, has announced the appointment of two seasoned industry veterans as its new chief operating officer (COO) and chief delivery officer (CDO). Keith Costello, with a proven track record in scaling global enterprise software and services organizations, will take on the role of COO, while Alexander Guasch, an expert in global delivery leadership and client-focused execution, will become the CDO.

Costello brings over three decades of experience in building and scaling organizations, having led teams of tens of thousands and managed businesses generating billions in revenue. His extensive background includes roles as president of enterprise applications, technology, consulting, and engineering services at DXC Technology, general manager of IBM's global SAP business unit, and senior executive positions within SAP.

As COO, Costello will oversee product strategy, product and service development, as well as the professional services sales function, taking over from Rimini Street's president and CEO, Seth Ravin.

Guasch, with more than three decades of experience leading integrated global IT service delivery organizations, will assume the role of CDO. His expertise lies in the development and delivery of products, services, and solutions worldwide, ensuring reliable operational excellence, exceptional service quality, and successful client outcomes.

Guasch's extensive background also includes leadership positions at HPE, IBM, VMware, Cognizant, Effectual, and Optiv. As CDO, he will be responsible for the end-to-end development and delivery of all company products, services, and solutions globally, with a focus on assuring reliable operational excellence, unparalleled service quality, and successful client outcomes.

Rimini Street, a trusted global provider of end-to-end mission-critical enterprise software support, managed services, and innovative Agentic AI ERP solutions, has appointed these industry veterans to strengthen its global operations and support continued client success. Both Costello and Guasch bring extensive operating experience, execution discipline, and client-first leadership to the company, ensuring it continues to help clients use technology to lower total operating costs, improve profitability, and enhance competitive advantage.