We expect all business software vendors to re-platform over the next few years.Duncan Ritchie, XeroXero has reported it has completed its transition to Amazon Web Services (AWS), marking one of the largest data migrations into the AWS cloud infrastructure environment across Australia and New Zealand.With more than 862,000 subscribers globally, the small business cloud accounting software provider recorded more than $1 trillion over 450 million ingoing and outgoing transactions in 12 months, signifying just how large the Xero data set has become.The migration, which took just over two years to be architected and executed, saw more than 59 billion records, 3000 apps and 120 databases securely transitioned to the AWS platform. Over that time, Xero added nearly half a million new customers.As Xero scales to serve millions of customers, rebuilding the infrastructure behind the platform will enable the company to leverage machine learning technology, and deliver fast-paced innovation, improved margins and increased uptime, the company said in a statement.While completing the migration, Xero says it has shipped thousands of product features and updates and continued to drive the innovation agenda in the accounting industry and small business sector.\u201cOur focus on completing a significant data migration to the AWS platform sets Xero up to deliver fast-paced innovation, leverage machine learning technology, improve margins, increase uptime and security and drive better business outcomes to help small businesses flourish,\u201d says Duncan Ritchie, Xero chief platform and product officer."It is a huge achievement to get through this massive transition. We expect all business software vendors to re-platform over the next few years so they too may take advantage of the commoditised innovation services in the larger public cloud platforms.\u201dDuncan Ritchie of Xero (Photo by Divina Paredes)The move to AWS enables Xero to economically scale to meet the needs of potentially millions of customersFaster innovationThe migration to AWS sets Xero up to accelerate innovation and capitalise on machine learning, which Xero believes will redefine accounting in future years.The smart application of machine learning technology enables Xero to leverage the more than 1.4 petabytes of data, which is the equivalent of about 60,000 Blu-Ray movies, being stored. It also allows Xero to do \u201c something powerful\u201d, automating core accounting functionalities and enable business owners to work more efficiently.In an earlier interview, Xero CEO Rod Drury says what is exciting in the cloud is that it is now moving to AI and machine learning. "Our focus now is making our software really smarter," he states.With the move to the public cloud, Drury says \u201cit is relatively easy to do the next phase which is adding the artificial intelligence and machine learning to these massive data sets."Under the hood: No infrastructure requiredXero, meanwhile, says it can leverage the considerable investment AWS has made in platform services to build and deploy software with shorter delivery timeframes. By using the on-demand computing power of AWS, Xero can release new software more rapidly, and experiment with these features in ways that were not possible on our older platform.The evolution and expansion of cloud computing globally has enabled companies like Xero to grow and go global from any part of the world, adds Ritchie.This is because there is no mass infrastructure required and Xero has proven its ability to grow in key markets, while having a product that is used in 180 countries around the world.\u201cUnder the hood, we actually have an increasing number of services that work together to deliver a customer experience. A key driver of our decision to move to AWS was to move technology decisions down into the hands of small autonomous groups of developers, and to allow greater experimentation with technology, allowing Xero to solve customer problems faster.\u201dWithout legacy systems and enabled by a comprehensive migration to the public cloud via AWS, the Xero platform will be able to capitalise on global scale and incremental product growth to deliver innovative services, he says.\u201cWe know that the faster we can deliver true innovation to our community of small businesses, accountants and bookkeepers, the more deeply they can feel the impact as it grows and integrates itself into everyday life. This ability has been supercharged with the move to AWS, and we can\u2019t wait for the year ahead.\u201dRod Drury - CEO, XeroLessons in scaling to a million customersAs Xero works towards its goal of reaching a million customers, we needed to scale our platform globally to provide customers with a fast, secure and easily accessible cloud platform they can access anytime, from any device connected to the internet, explains Ritchie. \u201cAWS provided us with significant potential to continually improve the underlying technologies that help Xero function.\u201cThe move to AWS enables Xero to economically scale to meet the needs of potentially millions of customers. When you\u2019re in the business of technological innovation, fast-paced future-thinking comes with the territory. As we move over to the AWS platform, and welcome its boundless computing power, we can experiment and iterate on our core product at pace.\u201d\u201cWe have been recognised globally for our innovation, business leadership and customer satisfaction multiple times, as Forbes\u2019 Most Innovative Growth Company in 2014 and 2015; Australian Canstar Award for Accounting Software for Small Business for the second consecutive year UK Cloud Awards for Financial Product of the Year, and New Zealand Trade and Enterprise International Business Award winner. Xero's executive team, led by CEO Rod Drury, receives the Excellence in Leadership award @ the New Zealand International Business Awards in Auckland. Send news tips and comments to firstname.lastname@example.orgFollow Divina Paredes on Twitter: @divinapFollow CIO New Zealand on Twitter:@cio_nzSign up for CIO newsletters for regular updates on CIO news, views and events.Join us on Facebook.