 a LoopBack 3 user, what should I do?<a href="#if-im-a-loopback-3-user-what-should-i-do" class="hash-link" aria-label="Direct link to If I&#x27;m a LoopBack 3 user, what should I do?" title="Direct link to If I&#x27;m a LoopBack 3 user, what should I do?">​</a></h3><p>If you already have LoopBack 3 applications running in production, it is a good time for you to review the <a href="https://loopback.io/doc/en/lb4/LoopBack-3.x.html" target="_blank" rel="noopener noreferrer">difference between LoopBack 3 and