Systems Maintenance Services | 4,435 followers on LinkedIn. SMS Systems Maintenance Services, Inc., a global market leader in IT data center lifecycle services, and Curvature LLC, the industry leader in new and pre-owned network hardware and IT infrastructure services, merged in 2017 to enable IT freedom to our customers so that they can invest more time and resources in pursuing technology and business innovations, and get game-changing benefits with minimal disruption to existing IT environments. With highly complementary product and service portfolios that serve adjacent market segments, the combined company, Curvature, provides a broad range of IT networking and data center services, products and solutions to organizations of all sizes around the world. With over 2,000 employees, the combined company is committed to accelerating innovation in its client solutions across both hardware and service offerings.