The document discusses 'Inttest', a scalable service integrity attestation framework designed for software-as-a-service (SaaS) cloud systems, which are vulnerable to attacks due to their shared nature. Inttest improves attacker pinpointing accuracy and enhances result quality by replacing malicious outputs with benign ones, without requiring special hardware or secure kernel support, making it suitable for large-scale cloud environments. Experimental results demonstrate Inttest's effectiveness on a production cloud infrastructure using IBM System S stream processing applications.