Metrics around Platform as a Service (PaaS) development environments are frequently immature, as PaaS is a relatively new and evolving cloud service model that offers various tools and platforms for developing, testing, deploying, and managing cloud applications. PaaS metrics are often not well-defined, standardized, or consistent across different providers and platforms, and may not capture the full value and performance of PaaS services. PaaS metrics may also be difficult to measure, monitor, and compare, as they depend on various factors, such as the type, complexity, and quality of the applications, the level of customization and integration, the usage patterns and demand, and the security and compliance requirements. Therefore, PaaS metrics may not provide sufficient insight or assurance to cloud customers and auditors on the effectiveness, efficiency, reliability, and security of PaaS services12.
Reference:
Cloud Computing Service Metrics Description - NIST
Cloud KPIs You Need to Measure Success - VMware Blogs

The shift-left concept of code release cycles is an approach that moves testing, quality, and performance evaluation early in the development process, often before any code is written. The goal of shift-left testing is to anticipate and resolve software defects, bugs, errors, and vulnerabilities as soon as possible, reducing the cost and time of fixing them later in the production stage. To achieve this, shift-left testing relies on automation tools and techniques that enable continuous integration, continuous delivery, and continuous deployment of code. Automation also facilitates collaboration and feedback among developers, testers, security experts, and other stakeholders throughout the development lifecycle. Therefore, the incorporation of automation to identify and address software code problems early is a sign that an organization has adopted a shift-left concept of code release cycles. Reference:
The 'Shift Left' Is A Growing Theme For Cloud Cybersecurity In 2022
Shift left vs shift right: A DevOps mystery solved
How to shift left with continuous integration

A double blind penetration test is a type of pen test where the hacker has no prior knowledge of the target's defenses, assets, or channels, and the target's security team is not notified in advance of the scope of the audit and the test vectors. This mode simulates a real-world attack scenario, where both the attacker and the defender have to rely on their skills and resources to achieve their objectives. A double blind penetration test can help evaluate the effectiveness of the target's security posture, detection and response capabilities, and incident management procedures12.
References:
* What is Penetration Testing | Step-By-Step Process & Methods | Imperva
* 7 Types of Penetration Testing: Guide to Pentest Methods & Types