Drupal migration, zero downtime.

For a mid-sized government platform, typically three to six months from kickoff to cutover, depending on custom module count, integration complexity and content volume.

The majority of time is in theme rebuild and custom module refactoring, not in the content migration itself.

No planned service interruption visible to end users during cutover. We run migrations as delta syncs into a staged environment, then switch DNS during a coordinated window.

Content editing is paused briefly during final sync, but public access stays available throughout.

Every existing URL is audited and mapped. 301 redirects go live at cutover so search engines, external links and bookmarks continue to resolve.

We run post-cutover broken-link scans and monitor search console for unexpected drops.

Yes. For larger estates, staged migration is often safer, moving site by site or content section by content section with parallel running during transition.

The strategy depends on your content model, editorial workflows and how the platform is consumed by other systems.

Most custom Drupal 7 modules need refactoring for Drupal 10 and 11 because of API changes.

We audit each module during the plan phase. Some are rebuilt, some are replaced with contrib equivalents, and some are retired if they solved a problem that no longer exists.