What is digital transformation?

Salesforce: Digital transformation is the process of using digital technologies to create new — or modify existing — business processes, culture, and customer experiences to meet changing business and market requirements. This reimagining of business in the digital age is digital transformation.

Citrix: Digital transformation is the strategic adoption of digital technologies. It’s used to improve processes and productivity, deliver better customer and employee experiences, manage business risk, and control costs. Digital transformation represents myriad tools, solutions, and processes. An effective strategy is one that’s customized for each unique organization.

The Enterprisers Project: Digital transformation is the integration of digital technology into all areas of a business, fundamentally changing how you operate and deliver value to customers. It's also a cultural change that requires organizations to continually challenge the status quo, experiment, and get comfortable with failure.

Wikipedia: Digital Transformation (DT or DX^[1]) is the use of new, fast and frequently changing digital technology to solve problems.