Maybe the "newly installed service" in this question mentions about Advanced Malware Protection (AMP) which can be used along with ESA. AMP allows superior protection across the attack continuum.
+ File Reputation - captures a fingerprint of each file as it traverses the ESA and sends it to AMP's cloudbased intelligence network for a reputation verdict. Given these results, you can automatically block malicious files and apply administrator-defined policy.
+ File Analysis - provides the ability to analyze unknown files that are traversing the ESA. A highly secure sandbox environment enables AMP to glean precise details about the file's behavior and to combine that data with detailed human and machine analysis to determine the file's threat level. This disposition is then fed into AMP cloud-based intelligence network and used to dynamically update and expand the AMP cloud data set for enhanced protection