An Authority to Operate (ATO) package is a collection of documents and artifacts that an organization must submit to a regulatory body or authority (Authorising Officer) to obtain permission to operate a system or application in a specific environment. An ATO is typically required for systems that handle sensitive or classified information, such as those used by government agencies, military organizations, or private companies that deal with sensitive data. 

The ATO package typically includes the following components: 

• System Architecture Diagrams - diagrams that illustrate the components of the system, how they are connected, and how data flows through the system. 
• Statement of Applicability (SoA) - is a document that identifies which controls from a particular security framework, such as ISM, NIST or ISO 27001, are applicable to an organization's systems, applications, and networks.  
• System Security Plan - a comprehensive document that outlines the security controls and measures that have been implemented to protect the system and its data. 
• Incident Response Plan - a plan that outlines the steps that the organization will take to respond to security incidents, including how incidents will be reported, how evidence will be collected, and how the incident will be resolved. 
• Continuous monitoring plan - A Continuous Monitoring Plan is a comprehensive document that outlines the ongoing process of monitoring and assessing the security posture of an organization's systems, applications, and networks. The goal of continuous monitoring is to detect and respond to security threats and vulnerabilities in a timely and efficient manner.  
• Security Risk Assessment - an analysis of the risks that the system and its data face, including threats, vulnerabilities, and potential impact. 
• Security Assessment Report - a report that summarizes the results of a security assessment, which typically includes penetration testing, vulnerability scanning, and other types of testing to validate the effectiveness of the security controls. 
• Plan of action and milestones - A Plan of Action and Milestones (POA&M) is a document that identifies security weaknesses or deficiencies in an organization's systems and provides a roadmap for addressing and remedying them.