Dedicated to making data faster and safer, Rambus is a leading semiconductor company that creates innovative hardware, software and services that drive technology advancements across the data center, edge and connected end points. Our architecture licenses, IP cores, chips, software, and services span memory and interfaces, embedded security, and key management technologies to positively impact the modern world. We collaborate with the industry, partnering with leading chip and system designers, foundries, and service providers. Integrated into a wide array of devices and systems, our products power and secure diverse applications, including data center and networking, artificial intelligence and machine learning, IoT, and automotive.
Building upon the foundation of technologies for memory, SerDes and other chip interfaces, we have expanded our portfolio of inventions and solutions to address chip and system security, as well as device provisioning and key management. We intend to continue our growth in leading-edge, high-growth markets, consistent with our mission to create value through our innovations and to make those technologies available through the shipment of products, the delivery of services, and licensing business models. Key to our efforts is continuing to hire and retain world-class inventors, scientists and engineers to lead the development and deployment of inventions and technology solutions for our fields of focus.
Rambus is aligning the research priorities in Rambus Labs on innovation and patent development in these key areas as well. Our patents remain foundational to our industry. By reinforcing our commitment to invention and advancing semiconductor technology, we enhance our value and relevance in our target markets and create a platform for investment in product development. Our inventions and technology solutions are offered to our customers through patent, technology, software and IP core licenses, as well as product sales and services. Today, our primary source of revenue is derived from patent licenses, through which we provide our customers a license to use a certain portion of our broad portfolio of patented inventions. Royalties from licenses accounted for 56%, 74% and 79% of our consolidated revenue for the years ended December 31, 2018, 2017 and 2016, respectively.