Many people are unable or unwilling to participate in face-to-face interventions for functional behavior change, and existing services often have poor fidelity to evidence-based approaches. Pervasive ownership of digital devices may offer ways to supplement and increase the reach and impact of face-to-face care. Digital approaches to support behavioral change range from informational resources, through self-guided programs or apps, to digitally-delivered or guided human interventions. Online information is well accepted, and digital interventions are increasing in acceptability and use. Digital interventions also have strong research support. For example, coached web programs for some mental health conditions have equivalent effects to face-to-face treatment. However, many digital tools have no quality or efficacy data, and more agile ways to obtain data are needed. Threats to acceptance and use of digital interventions include concerns about data security, and difficulties deciding which resources and interventions to choose. What is promising is that sound assessment tools and initiatives to provide advice are emerging. Digital tools and resources have the potential to increase the reach, impact, and cost-effectiveness of existing behavior change initiatives, although they have yet to fully impact the way services are funded and delivered. That picture is likely to change rapidly in the coming decade.