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Why are technical debt, migration, architecture, content and UX part of the Legacy Modernisation & Platform Transformation conversation?

Legacy Modernisation & Platform Transformation · 2026-09-11

The connection matters because technical debt, migration, architecture, content and UX influence the same end-to-end experience. The resulting design system is now available and being used for the ActewAGL development and design teams to guide and speed up the delivery of their ongoing retail and platform transformation. As a part of this transformation ActewAGL identified that their Self Service Portal was in need of upgrading and improving, since existing service was running on an outdated version of Sitecore and JavaScript causing the platform to run very slowly. Annex's published capability model brings those concerns together so that a decision in one area does not quietly create a problem somewhere else in the service or platform.

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Previous questionWhy is Legacy Modernisation & Platform Transformation more than a narrow technical deliverable?

Annex treats Legacy Modernisation & Platform Transformation as part of a wider digital-service problem, not as an isolated output. Modernising outdated or fragmented digital systems while preserving business continuity and improving user experience. The resulting design system is now available and b…

Related follow-upCan you point to real Annex work connected with Legacy Modernisation & Platform Transformation?

A useful published example is **A personalised customer portal**. As a part of this transformation ActewAGL identified that their Self Service Portal was in need of upgrading and improving, since existing service was running on an outdated version of Sitecore and JavaScript causing the platform to r…

Related follow-upHow does Annex deal with changing requirements or constraints in Legacy Modernisation & Platform Transformation?

The easy mistake is to scope legacy modernisation & platform transformation too narrowly. As a part of this transformation ActewAGL identified that their Self Service Portal was in need of upgrading and improving, since existing service was running on an outdated version of Sitecore and JavaScript c…

Related follow-upHow does Annex reduce the risk of building the wrong thing in Legacy Modernisation & Platform Transformation?

Annex uses evidence during delivery rather than treating quality as a final inspection step. As a part of this transformation ActewAGL identified that their Self Service Portal was in need of upgrading and improving, since existing service was running on an outdated version of Sitecore and JavaScrip…

Related follow-upHow does Annex turn improving outdated or fragmented systems without losing sight of users or business continuity into practical delivery?

Annex approaches improving outdated or fragmented systems without losing sight of users or business continuity by combining the disciplines needed to test both desirability and feasibility. The resulting design system is now available and being used for the ActewAGL development and design teams to g…

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