Effect of Linking Data Using Smartphone Application, 'Well Check', on Clinical Outcomes in Patients With Type 2 Diabetes Mellitus

Inclusion Criteria: 1. Adults aged 19 years and older. 2. Patients with Type 2 diabetes who are scheduled to receive initial treatment with Enavogliflozin or Enavogliflozin Extended-Release Tablets based on the attending physician's medical judgment, within the following insurance coverage ranges: * Enavogliflozin monotherapy * Combination therapy of Enavogliflozin with two agents (metformin) * Combination therapy of Enavogliflozin with three agents (metformin + DPP-4 inhibitor) 3. Individuals who have received detailed explanation and have understood the nature of the observational study and the investigational drug, and have provided written consent to participate voluntarily in the observational study and to comply with subject precautions during the study period. Exclusion Criteria: 1. Individuals with diabetes other than Type 2 diabetes (Type 1 diabetes, diabetic ketoacidosis, gestational diabetes, etc.). 2. Individuals who are contraindicated for Enavogliflozin or Enavogliflozin Extended-Release Tablets based on the approved indications: * Patients with a history of hypersensitivity reactions to the components of Enavogliflozin or Enavogliflozin Extended-Release Tablets * Patients with an eGFR (estimated Glomerular Filtration Rate) less than 30 mL/min/1.73m2, end-stage renal disease, or undergoing dialysis * Patients with moderate to severe hepatic impairment (AST or ALT \> 3 times the upper limit of normal, Total Bilirubin \> 2 times the upper limit of normal, hepatitis or hepatic failure) * Patients classified as NYHA (New York Heart Association) class III or IV 3. Patients initiating treatment with Enavogliflozin or Enavogliflozin Extended-Release Tablets at enrollment with an eGFR of less than 60ml/min/1.73m2. 4. Patients with unstable weight due to treatment with obesity drugs or weight loss medications within 3 months prior to enrollment or other treatments (surgery, dietary therapy, etc.). 5. Pregnant and lactating women. 6. Individuals currently participating in another clinical trial and receiving investigational drugs or investigational medical devices. 7. Other individuals deemed unsuitable for participation in the observational study based on the investigator's (attending physician's) judgment.