Thanks for detailed reply.<p>I&#x27;m using Node.js, this is a gist of the Lambda function: <a href="https:&#x2F;&#x2F;gist.github.com&#x2F;paulspringett&#x2F;ec6d3df65e977342d6ea" rel="nofollow">https:&#x2F;&#x2F;gist.github.com&#x2F;paulspringett&#x2F;ec6d3df65e977342d6ea</a><p>I&#x27;m initialising the DDB connection outside the function as you suggest. However, I&#x27;m calling context.succeed() not context.done() -- would this be problematic?<p>I&#x27;ll try increasing the &quot;memory size&quot; and requesting an increased concurrent request limit too, thanks.