Phase IV Study in Asthma Subjects for Dry Powder Inhaler (DPI) Versus (vs) Metered Dose Inhaler (MDI) Correct Use

Inclusion Criteria: * \- Subjects aged 18 years or older, at the time of signing the informed consent * Documented history of moderate persistent asthma * Asthma Control Test (ACT) score \>=20 * Male or Females (who are not pregnant or planning pregnancy during the study or not lactating) * Capable of giving signed informed consent which includes compliance with the requirements and restrictions * Subject understands and is willing, able, and likely to comply with study procedures and restrictions * Subject must be able to read, comprehend, and record information in English * Should not have received maintenance therapy via MDI or ELLIPTA in the past six months (DISKUS (trade name owned by GSK group of companies under license), TWISTHALER (trade name owned by Merck Sharp \& Dohme Corporation, a subsidiary of Merck \& Co, under license, etc are acceptable). Subject must be on maintenance therapy for 3 months, have not changed dose in the month prior to inclusion and be able to continue using their maintenance therapy throughout the study * Requires Short-acting-beta-agonist (SABA) for symptom control =\<2 days/week. Use of SABA prior to exercise for the prevention of exercise induced bronchoconstriction is exclusionary. Exclusion Criteria: * Subjects with a known or suspected alcohol or drug abuse at Visit 1 which in the opinion of the investigator could interfere with the subject's proper completion of the protocol requirement * Current smokers or subjects with a smoking history of 10 pack-years or more (example, 20 cigarettes/day for 10 years) are not eligible. A subject may not have used tobacco products within the past year (i.e., cigarettes, cigars, or pipe tobacco) * Concurrent diagnosis of chronic obstructive pulmonary disease (COPD) or other respiratory disorders including active tuberculosis, lung cancer, bronchiectasis, sarcoidosis, lung fibrosis, pulmonary hypertension, interstitial lung diseases or other active pulmonary diseases * History of life threatening asthma or has experienced more than 1 exacerbation which required oral/systemic corticosteroids in the 12 months prior to Visit 1 * History of hypersensitivity to any components of the study inhaler (e.g., lactose, magnesium stearate). In addition, subjects with a history of severe milk protein allergy that, in the opinion of the study physician, contraindicates participation * Historical or current evidence of clinically significant or rapidly progressing or unstable cardiovascular, neurological, cardiovascular, neurological, renal, hepatic, immunological, endocrine (including uncontrolled diabetes or thyroid disease) or hematological abnormalities that are uncontrolled. Significant is defined as any disease that, in the opinion of the investigator, would put the safety of the subject at risk through participation, or which would affect the affect the analysis if the disease/condition exacerbated during the study * Subjects who have received an investigational drug and/or medical device within 30 days of entry into this study (Screening/Visit 1), or within five drug half-lives of the investigational drug, whichever is longer * A subject will not be eligible for this study if he/she is an immediate family member of the participating investigator, sub-investigator, study coordinator, or employee of the participating investigator.