In the Service Transition phase of IT Service Management (ITSM), the primary focus should be on documenting and testing new processes. This phase involves preparing for the deployment of new or changed services. It includes activities such as creating documentation, conducting testing, and ensuring that the new ITSM tool integrates seamlessly with existing processes.

An algorithm with a time complexity of O(1) has a constant time of execution, meaning it always takes the same amount of time, regardless of the input size. This is the most efficient time complexity.

When an array reaches its initial capacity and needs more space, the process of reallocating memory is called 'Reallocation.' This is commonly seen in dynamic arrays or lists.

The main objective of the 'Initiation' phase in a project's lifecycle is to define the project scope and its purpose. During this phase, the project's feasibility is assessed, and initial plans are developed. It sets the project's direction.

The term you're looking for is 'Cost Baseline.' In IT project management, the cost baseline represents the approved budget for the project, including all authorized contingency reserves. It's a critical component for tracking and controlling the project's financial aspects.

Infrastructure as a Service (IaaS) in cloud computing provides virtualized computing resources. 'Virtual Machines' are a prime example of IaaS, allowing users to provision and manage virtual servers in the cloud.

In advanced network troubleshooting, 'SSH' (Secure Shell) is used to establish a secure two-way communication channel over a TCP connection. It's commonly used for network management, remote server access, and secure data transfer. SSH provides authentication and encryption.

The technique referred to in the question is 'Attention Visualization.' It's a method used to visualize the attention scores of each word in an NLP model, particularly in Transformer-based models like BERT. Understanding attention can reveal how models make predictions.

'Risk Acceptance' is a risk management strategy in which the project team recognizes a potential risk but chooses not to take any proactive action unless the risk actually materializes. This approach is often used for risks with low impact or likelihood.

To ensure compliance with different data protection laws globally while maintaining a unified security posture, 'Centralized Security' is the most effective approach. It allows for consistent security policies and controls across all branches.

The RSA algorithm uses a pair of keys - one public and one private. The public key is used for encryption, while the private key is used for decryption. It's widely used for secure data transmission and digital signatures.

Multi-Region Deployment involves deploying your application in multiple geographic regions. This approach helps distribute the load and deliver content faster to users by serving content from servers closer to the end-users, reducing latency and improving performance.