Speed, security, resilience – game changing cloud migration at an energy company

Our Role: Helping a large European energy company migrate its IT infrastructure from on-premises hosting to the cloud.
Industry: Energy
Powered by: Amazon Web Services

Faced with the need to accommodate ongoing growth, a subsidiary of a large European energy company needed to rapidly migrate its complex IT infrastructure from on-premises hosting to the cloud.

Windmills next to a body of water

Working with PwC, the organisation completed its migration to Amazon Web Services (AWS) in just four months – even though the move took place during the height of the COVID-19 pandemic, requiring most team members to work remotely.

By the end of the project, the company had successfully migrated all active customers and supervised sites and around 154,000 active supervised channels. The programme covered 20 client and business applications across 60 application servers, as well as more than 200 domain names, 20 terabytes of storage and backup and 237,000 lines of automation code. The migration was completed in four waves, with the final switch to production taking place over just 48 hours.

As a result of the move, the subsidiary has accelerated its digital capabilities, sped up its ability to roll out new services, and improved the resilience and security of its IT. It was also able to reduce costs and enable more sustainable operations through more efficient and intelligent use of resources.

The challenge: Migrating from on-premises to the cloud

The client, being a subsidiary of a large energy company, had been finding it increasingly difficult to scale its services as it grew. With the hosting contract due to expire, it decided to migrate from an on-premises infrastructure to the AWS cloud.

Complicating that decision however, was the possibility that the organisation might soon merge with another subsidiary. It also faced challenges because its small IT operations team lacked experience working with cloud infrastructure.

Working with us, the subsidiary was able to validate the technical feasibility of the migration and set up the required technical building blocks for the move using a security-by-design approach. We then collaborated with the company to complete the migration.

The migration project launched during the height of the COVID-19 pandemic, requiring 90% of the work to be done remotely.

The approach: A clear roadmap, remote collaboration

Working collaboratively, we created a methodical roadmap to help the company achieve its goals. This established a four-stage process for the migration: 1) study and analysis of the existing infrastructure (one month), 2) creation of a proof of concept and preparation for migration (two-and-a-half months), 3) migration (half a month) and 4) support and optimisation (four months).

Managing a large migration like this with a mostly remote workforce meant making sure that teams could communicate and collaborate effectively no matter where they were working from. We worked with the company to enable this through daily standups and a variety of collaboration tools, including Jira for task and backlog management, Confluence and Draw.io for collaborative design, and Slack for online communications and notifications.

The impact: Improved speed, resilience, sustainability

By enabling it to accelerate its digital capabilities, the migration delivered many benefits for the company: increased agility, optimised costs, greater resilience, improved security and more sustainable IT.

For example, the subsidiary was able to speed its time to market for new services and automate many previously manual tasks. It was also able to improve the cost effectiveness of its IT and even reduce resource costs by 30% in just three months. What’s more, the move to a distributed architecture across multiple data centres provided a more reliable and resilient infrastructure, while automation enabled effective management with a small team.

The cloud infrastructure also ensures the security of the organisation’s operating systems and software through regular patches and updates. And optimising resource consumption through strategies such as scheduled standby of machines during times of low demand helps the company to operate in a more green and sustainable manner.

“This Cloud Transformation programme allowed our client to reimagine their future and together we successfully ran this as a business transformation, not just a technology project! We embedded cyber and innovation in the core which allowed us to reach new heights.”

Contact us

Jon Maskery

Jon Maskery

Partner, UK Financial Services Consulting, PwC United Kingdom

Tel: +44 (0)7802 952626

Henri Chabrier

Henri Chabrier

Advisory Partner, PwC France

Tel: +33 1 56 57 46 40

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