Real-world evidence (RWE) is rapidly becoming a crucial component in healthcare decision-making, complementing traditional clinical trial data. Randomized controlled trials (RCTs) are widely regarded as the most reliable method for assessing the efficacy and safety of medical treatments. RWE can enhance and support the results obtained from traditional RCTs. RWE is derived from real-world data (RWD). Understanding RWE is essential for clinicians as it helps in guiding treatment decisions, assessing the effectiveness of therapies, and monitoring drug safety in broader patient populations. This article explores what clinicians need to know about RWE, its sources, applications, challenges, and future implications in healthcare.