--- type: Pillar title: Software support and modernisation for Australian businesses description: Keep the software your business runs on hosted, patched, supported and current, with cloud engineering, application support and modernisation. resource: https://nationaldigital.com.au/software-support/ tags: - software-support - Software support and modernisation - Cloud engineering - Application support - Legacy modernisation - Technical due diligence - software support - application support Australia - software modernisation - legacy application modernisation - technical due diligence software timestamp: "2026-11-10T12:00:00.000Z" language: en-AU publisher: National Digital author: National Digital engineering team readingTimeMinutes: 2 wordCount: 325 datePublished: "2026-11-10" dateModified: "2026-11-10" pillar: software_support canonical: https://nationaldigital.com.au/software-support/ sourceCount: 2 --- *Pillar · 4 hubs · 8 guides* # Software support and modernisation for Australian businesses Keep the software your business runs on hosted, patched, supported and current. Cloud engineering, application support, legacy modernisation and technical due diligence. **Where this pillar sits** · 4 of 22 areas Areas this page covers - Cloud, security & support - Application support - Legacy modernisation - Technical audit [Open the full map on the homepage](/#systems-map-hero) **Quick answer:** National Digital supports and modernises software that is already running, through cloud engineering, application support, legacy modernisation and technical due diligence, starting with a fixed-fee Platform Health Check. *Quick answer* ## What is software support and modernisation? *High confidence · Verified 10 Nov 2026* Software support and modernisation keeps a system that is already running hosted, patched, monitored and current, and replaces its ageing parts in stages so the business keeps trading while the work is done. **Additional Context:** The work starts with an assessment of the system as it runs today. The assessment shows what to fix first, what to leave alone and what a handover from a previous provider needs to include. ### Sources - [Cloud Security Guidance](https://www.cyber.gov.au/resources-business-and-government/maintaining-devices-and-systems/cloud-security-guidance) — ACSC guidance on configuring and operating cloud services securely. - [OAIC – Australian Privacy Principle 11: Security of personal information](https://www.oaic.gov.au/privacy/australian-privacy-principles/australian-privacy-principles-guidelines/chapter-11-app-11-security-of-personal-information) — APP 11 requires reasonable steps to protect personal information for as long as it is held, and to destroy or de-identify it once it is no longer needed. *What this practice covers* ## What software support and modernisation covers This practice covers the systems a business already runs. It has four parts, and each has its own page. - [Cloud engineering](/software-support/cloud-engineering/) covers hosting, cloud migration, monitoring and performance. - [Application support](/software-support/application-support/) covers taking over and maintaining an application that another team built. - [Legacy modernisation](/software-support/legacy-modernisation/) covers replacing the ageing parts of a system in stages. - [Technical due diligence](/software-support/technical-due-diligence/) covers an independent review of a system before a purchase, a handover or a rebuild. ## Where to start The first step for an existing system is the [Platform Health Check](/services/platform-health-check/), a fixed-fee report on the condition of the code, infrastructure, security and documentation. It costs $3,950 ([Platform Health Check](/services/platform-health-check/)). Taking over a system after the health check costs $6,600 – $22,880 ([Taking over a system (per month, first quarter)](/services/rate-card/)) a month for the first quarter. Managed hosting and support for a system in production costs $1,495 ([Managed hosting and support (per month)](/software-support/cloud-engineering/)) a month, and engineering hours on top come under a Product Support retainer. Every price here excludes GST. Written by National Digital engineering team *Next steps* ## Two ways to get a number. ### Get a range now Seven questions, an instant cost range. No email address, no callback. [Estimate your project](/estimate/) ### Find out what condition it is in A Platform Health Check is a fixed $3,950 review of the code, infrastructure, security posture and documentation, ending in a written report and one recommendation. The fee is credited in full against a rebuild that proceeds within 90 days. [See the Platform Health Check](/services/platform-health-check/) ## Talk to an engineer about the system you run Tell us what the system does and who looks after it today. You will get a considered reply from the engineer who would do the work, within one business day. ## Explore this pillar ### [Cloud engineering](/software-support/cloud-engineering/) *7 guides* Cloud engineering that connects your platforms, modernises legacy systems and scales without a risky rebuild. Get in touch. ### [Application support and maintenance](/software-support/application-support/) *1 guide* Take over, maintain and support an application that another team built. See what we cover, where we start and what it costs. ### [Legacy modernisation](/software-support/legacy-modernisation/) *0 guides* A staged approach to legacy application modernisation that keeps systems running while old code is replaced. See how it works. ### [Technical due diligence](/software-support/technical-due-diligence/) *0 guides* An independent review of a software system before you buy it, take it over or rebuild it. See what we review and what you receive. ## Related **Parent:** - [National Digital - Custom Software, AI & Platforms](/okf/home.md) **Children:** - [Cloud migration and engineering services for growing Australian businesses](/okf/software-support/cloud-engineering.md) - [Application support and maintenance for software you did not build](/okf/software-support/application-support.md) - [Legacy Application Modernisation](/okf/software-support/legacy-modernisation.md) - [Technical due diligence and software audits](/okf/software-support/technical-due-diligence.md) # Citations 1. [Cloud Security Guidance](https://www.cyber.gov.au/resources-business-and-government/maintaining-devices-and-systems/cloud-security-guidance) — ACSC guidance on configuring and operating cloud services securely. 2. [OAIC – Australian Privacy Principle 11: Security of personal information](https://www.oaic.gov.au/privacy/australian-privacy-principles/australian-privacy-principles-guidelines/chapter-11-app-11-security-of-personal-information) — APP 11 requires reasonable steps to protect personal information for as long as it is held, and to destroy or de-identify it once it is no longer needed.