Comprehensive and Detailed Explanation:

The delay in initiating on-premises deployments is likely caused by slow artifact retrieval. Using a local artifact repository:

Reduces dependency on external storage (e.g., Artifact Registry in GCP).

Speeds up deployments by ensuring artifacts are read from a closer, low-latency source.

????Why not other options?

A (Blue-green deployment strategy)❌→ Helps with zero-downtime deployments but doesn’t address slow initiation.

B (Upgrading CPUs and memory)❌→ CPU/RAM are not the issue (since resource utilization is normal).

C (Increasing Jenkins executor threads)❌→ Would help only if Jenkins was the bottleneck, but the issue is artifact retrieval.

????Official Reference:

Best Practices for Artifact Management in Jenkins