An Intensive Outpatient Program is often described as more structured than standard outpatient support. Standard outpatient care is generally described as a lighter schedule. People often use it after a higher level of care, or when their needs are less intensive. These are general patterns you may read about, not fixed rules for every program. Program design varies by provider, location, and state licensing rules.
These terms get used inconsistently across different providers. It helps to ask direct questions rather than assume what a program includes. You might ask how many hours per week a program involves. You might ask what a typical week looks like, or who decides which level fits you. These are fair questions. A qualified professional should answer them clearly for any specific program you consider.