Cloud Architecture & Migration

Some migrations need a short period when writes stop so the source and destination can be reconciled. Other systems can remain available using replication and a controlled cutover. What to check Measure write volume, replication lag, acceptable downtime, rollback needs, and dependencies that update data during migration. Confirm how queued changes will...

A vendor integration may allow traffic only from known IP addresses. A cloud move can change outbound addresses and break the connection even when the application itself migrates successfully. What to check Identify vendor allowlists, source NAT behavior, firewall rules, callback URLs, and test endpoints. Confirm the vendor’s change process and lead...

Applications and staff may rely on local file shares for templates, exports, or shared working files. Moving the application alone can break those paths or change access behavior. What to check Identify file paths, access groups, locking behavior, permissions, backup coverage, and whether applications write to the shares. Confirm latency and...

A long-running batch may overlap the cutover window or depend on local files and schedules. Moving the application without accounting for its job lifecycle can create missed or duplicated work. What to check Measure job duration and frequency, identify checkpoints and input/output locations, and confirm how to pause or resume safely. Review data...

Some applications check out licenses from a vendor server or bind them to a host identity. A move can fail when the license terms or connectivity change. What to check Confirm license limits, host binding, network allowlists, renewal behavior, vendor support, and whether a test environment is permitted. Identify the license server dependency and...

An application may rely on a license file tied to a host, address, or installation path. A move can make the application appear unlicensed or prevent scheduled work. What to check Locate license files and renewal processes, confirm host binding and vendor terms, identify file permissions, and test whether the destination environment is supported....

Some services are reachable only through private network routes. A cloud migration can break user access if routing, DNS, identity, or endpoint policies are not carried over. What to check Map user locations, VPN or private access dependencies, DNS resolution, address ranges, identity checks, and firewall ownership. Test remote and office paths...

Infrastructure migration can leave audit records in the original account or platform. Those logs may be needed to explain changes before, during, and after cutover. What to check Identify log sources, retention, export formats, account access, timestamps, and ownership. Confirm whether records are immutable and whether the destination can search...