In this sample chapter, Aleksandar Seovic, founder and managing director at S4HC, Inc., takes a look at the building a highly available and scalable system; explaining how Coherence impacts the elimination and reduction of availability and scalability and why it is a foundation for scalable applications. Improving performance equates to reducing latency and the amount of data you go after. With Coherence, and utilizing various features these goals can be achieved—helping to improve scalability within the data management layer and eliminating the need for complex database scale-out strategies.