Will on-premises infrastructure be supplanted by Public Cloud?
Does it still make sense to invest in on-premises infrastructure?
It requires highly skilled profiles and large capital expense.
For which results ? Private Cloud running with on-premises infra has already lost the war against these Public Cloud providers with a catalog of +100 services ready for production.
The business wants to be supported in business innovation (Big Data, Machine Learning, IoT, Robotics,..). It does want any more to hear about downtime, capacity planning or long term commitment. Otherwise business teams will work directly with these cloud providers and IT teams can only lose this battle. Don’t forget the business teams generate the revenue while IT is a cost center for most organisations. Nevertheless IT can embrace Public Cloud and transform itself as a real innovation partner.
How can I fail fast or grow fast in any on-premises datacenter ? Agile method and fast innovation are mostly spread in companies that relies on Public Cloud. This really scalable environment foster the development of DevOps pipelines with complete end-to-end continuous deployment.
Many hyperscale providers are the best choice to limit Cybersecurity exposure. They employee thousands of best of the breed security engineers and invest billions each year. No other company in the word can invest this time and money in datacenters’ security and competes with these providers.
What about vendor lock-in ? This risk can be resolved by relying on managed services that are compatible with open source technologies. Besides the pace of IT industry is moving so fast that you will have to rethink most application architectures in five years or less.
Cost efficiency is real for any company when migration to Public Cloud mixes FinOps/Automation optimisation on IaaS environments and transformation of some applications with serverless services. The business case is something hard to build correctly as it must included data from several cost centers (infrastructure, security, digital factory, external contracts, …). At the end of this financial evaluation, on-premises scenario is always defeated.
Beyond cost efficiency, this is an environmental duty to embrace Public Cloud. Rate of digital growth is not sustainable for our planet 🌎. Public cloud provides infrastructure with lowest PUE (in average twice lower than most on-premises datacenters). Today GCP produces 100% renewable energy to compensate all power consumption of its datacenters and AWS commits to reach 100% renewable electricity. Serverless architecture is one big lever of power efficiency because CPU power is used only when needed, with the end of idle servers. This sharing model is the most eco-friendly one.
More and more IT organisations perceives Public Cloud as a complementary lever. However mixing owned and managed on-premises infrastructure and Public Clouds should be only a temporary state to target all-in move to Public Clouds.