You can use a module such as http_client or rtjson to query a Lambda by putting an AWS API Gateway in front of the Lambda. — Sent from my iPad On Jan 20, 2021, at 1:40 PM, H Yavari &lt;hyavari(a)rocketmail.com&gt; wrote:  Hi Henning, Thanks for your reply. For example functions for processing some action based on different SIP messages from outside. Is there any sample or tutorial for scenarios like this? please share. Regards, H.Yavari On Wednesday, January 20, 2021, 08:19:18 AM PST, Henning Westerholt < hw(a)skalatan.de&gt; wrote: Hi HYavari, you can process json with some of the json modules available in Kamailio. Regarding the other question about lambda functions – maybe you can share some more details what you want to achieve. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; *On Behalf Of *H Yavari *Sent:* Wednesday, January 20, 2021 4:51 AM *To:* sr-users(a)lists.kamailio.org *Subject:* [SR-Users] Kamailio and Serverless Hi to all, Does anyone have experience using Kamailio in front of some Lambda / Cloud functions? For example, passing call info with JSON to functions. Please share your ideas. Regards, HYavari _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users