Whakarongorau Aotearoa (formerly known as Homecare Medical) is a central cog in New Zealand’s public health information and support engine – perhaps best known for its team of registered nurses, paramedics, and health advisors behind the country’s critical telehealth service Healthline.
In pre-Covid-19 times, the organisation’s call centres handled around 7,000 calls a day. In March 2020, when the World Health Organisation (WHO) declared a global pandemic, that number exploded over the following weeks to 166,000 – an increase of 2,000 plus percent.
In the preceding weeks, when the tidal wave of demand for services became evident, Whakarongorau Aotearoa scaled up operations, increasing headcount from approximately 450 to 1,100 employees – many new to the health industry – spread over multiple contact centres and at-home locations.
The expected flood of new employees requiring immediate access to the provider’s customer management system demanded a swift response. Public cloud was an obvious answer, though still left questions about the right mechanism to securely deliver applications to Whakarongorau Aotearoa’s staff everywhere they worked.
With partner CCL, the healthcare provider settled on Azure Virtual Desktop (AVD, formerly known as Windows Virtual Desktop, or WVD) – a virtual desktop infrastructure service, delivered from Microsoft Azure, for remotely accessing client desktops and applications.
However, while running a virtual desktop solution from Microsoft Azure was expected to lighten the admin load, a mountain of work was required to design and deliver a finished product ready to take life as a “gold stamped” desktop image available to employees.
With the clock ticking, a small team of CCL engineers and support staff swung into action, delivering what was needed in just 24 hours.
New Zealand was on edge. The country’s first case of Covid-19 was reported on 28 February, followed two weeks later by the WHO’s declaration of an official pandemic.
The following is a blow-by-blow account of CCL’s response to Whakarongorau Aotearoa’s urgent requirement for a virtual desktop solution, starting with a lunchtime meeting at CCL’s Auckland office, on Thursday 19 March 2020 – two days out from the government’s introduction of a four-level alert system to combat the pandemic.
CCL’s client team – a blend of suits and a project manager – convened a virtual meeting at CCL’s office in College Hill, Auckland. An earlier discussion with client Whakarongorau Aotearoa directed play to Microsoft Azure. The healthcare provider was bedding in approximately 200 new contact centre agents to deliver non-clinical assessments. Just how quickly could CCL deliver a virtual desktop solution primed for a “golden” desktop image and rapid deployment to Whakarongorau Aotearoa’s ballooning workforce?
Over the next three hours a one-page plan took shape, covering key tasks, technical resources, and central elements of the solution. Key among these included a VPN running between Microsoft Azure and the provider’s core applications hosted in CCL’s Albany data centre, domain controllers, Active Directory Servers, security, and a ‘blank’ virtual desktop image ready for population and deployment.
CCL project manager Jamie Thomas briefs the delivery team – a collection of cloud, Windows, and network engineers, and a solution architect. Work starts on building a VPN gateway – a necessary precursor to establish access to Active Directory and domain controllers. The gateway fails and is rebuilt over the early evening.
VPN endpoints between Microsoft Azure and CCL’s data centre are up and running.
Work starts on the domain controller – the server controlling access to user accounts and group policies within Active Directory services. The VPN, now in place, smooths the way for the replication of Whakarongorau Aotearoa user accounts to its Microsoft Azure tenancy.
Domain controller and active directory server setup is completed. Attention turns to configuring the server controlling virtual desktop deployment. Automation is the name of the game, so when Whakarongorau Aotearoa employees log in, the system automatically spins up new servers to deliver a desktop image, rather than an admin having to do the job manually. Project manager Thomas heads home.
Firewalls and security layers for outbound network connections, traffic filtering, and access, are set and deployed. Thomas catches some sleep.
Deployment server configuration is completed. However, a network problem is detected, and additional work is required to map multiple IP address ranges in the provider’s local environment to its virtual environment in Microsoft Azure.
CCL delivers blank desktop image ready for loading applications to create a master image.
Whakarongorau Aotearoa infrastructure engineers create “gold stamped” desktop image and conduct final testing.
The first five virtual desktops are up and running, with the number increasing as new employees are onboarded and training commences.
By Thursday 26 March – the first official day of level four lockdown – 350 Whakarongorau Aotearoa staff and partners are working on a virtual desktop.