Ganttastic
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Data migration project plan template.

Turn a migration brief into an editable data migration plan in seconds. Ganttastic's AI lays out the phases, tasks, milestones and dependencies — then you edit dates, assign owners, share a live link and export.

Generate your own planSee the template

Free · No signup to try · Editable & exportable

Start from a brief

Paste something like this.

“We're migrating customer and order data from a legacy on-prem system to a new cloud CRM. It's roughly 1.2 million customer records and five years of order history, plus documents in file storage. The team is a project manager, a data engineer, a DBA, a QA analyst, and business owners from sales and finance who need to sign off that the numbers reconcile. There is a hard cutover weekend in about 12 weeks; downtime must be under eight hours and there can be no data loss.”

That’s the before. Here’s the plan Ganttastic builds from it.

Typical timeline · 8-16 weeks

The data migration plan.

An editable data migration Gantt plan generated in Ganttastic, with task bars, dependencies, and milestones
  1. 1

    Discovery & Assessment

    • Inventory source systems and data volumes
    • Profile data quality: nulls, duplicates and formats
    • Define scope and what is in and out
    • Agree success criteria and reconciliation rules
    • Risk assessment and rollback strategy
  2. 2

    Mapping & Design

    • Build the source-to-target field mapping
    • Design transformation and cleansing rules
    • Define keys, relationships and deduplication logic
    • Plan the migration sequence and dependencies
    • Document and sign off the migration design
  3. 3

    Build & Environment Setup

    • Set up staging and target environments
    • Build the ETL scripts and transformation logic
    • Implement validation and reconciliation checks
    • Set up logging and error handling
    • Secure access and credentials
  4. 4

    Trial Migrations & Testing

    • Run a full trial migration on a copy
    • Reconcile record counts and sample values with business owners
    • Performance-test to size the cutover window
    • Fix data and mapping defects
    • Repeat the trial until it is clean
  5. 5

    Cutover & Go-Live

    • Freeze the source data
    • Run the production migration
    • Reconcile results and get business sign-off
    • Switch applications over to the new system
    • Keep the rollback path ready
  6. 6

    Post-Migration Verification

    • Monitor for errors and missing data
    • Run reconciliation reports
    • Support users and fix issues
    • Decommission the source after a stabilisation period
    • Document lessons learned

Key dependencies

  • Data profiling must come before mapping design — you cannot write reliable transformation rules until you know how dirty and inconsistent the source data actually is.
  • The field mapping and cleansing rules must be finalised before the ETL build; changing the mapping after scripts are written forces rework and re-testing.
  • At least one full, reconciled trial migration must succeed before the cutover is scheduled — the trial is what tells you the real duration and whether the numbers add up.

Timeline risks

  • Migrations slip most on data-quality surprises found during trial runs and on reconciliation mismatches that business owners will not sign off on — both surface late and take longer to resolve than expected.
  • The cutover window is a hard constraint, so performance-test the full volume early to confirm the migration fits the downtime budget, and keep a tested rollback path.
  • Sign-off depends on busy finance and sales stakeholders; agree the reconciliation rules and book them for validation up front, not on cutover weekend.

How to use it

Make it your plan.

  1. 1

    Open the AI planner

    Start a new plan in Ganttastic and choose to generate it with AI.

  2. 2

    Paste or edit the brief

    Use the data migration brief above as a starting point and tweak it to match your project.

  3. 3

    Ganttastic generates your plan

    The AI drafts tasks, milestones, dependencies, and dates for your data migration.

  4. 4

    Edit and assign

    Adjust tasks and dates, rewire dependencies, and assign owners.

  5. 5

    Share or export

    Send a live link to stakeholders, or export to Excel, CSV, PDF, or PNG.

Questions, answered.

Can’t find what you’re looking for? Email support@ganttastic.com and we’ll get back to you within one business day.

Your data migration.
Your plan.

Generate your own data migration plan from a brief — editable, shareable, and free to try. No signup required.

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