Twilio Flex is a different product, documented on its own site

About five minutes of reading

This lab did not open an AWS page that names Twilio as an Amazon Connect connector.

Twilio's Flex guide says the integration embeds the Flex agent UI in Salesforce. Classic and Lightning are both in that guide. It lists voice, web chat, SMS, and WhatsApp, plus click-to-dial, screen pop, activity logging, and single sign-on. Flex can sit inside Salesforce, or Salesforce can sit inside Flex. The same page says Salesforce Open CTI, including this Flex integration, is scheduled to retire on 28 February 2028.

Amazon Connect's Transfer to phone number block is a different seam. The block page says voice is supported and chat, task, and email take the error branch. Twilio's SIP REFER page describes transfers on Twilio Elastic SIP Trunking. That is Twilio's trunk, not the Connect flow block.

• The Flex guide tells you to add https://flex.twilio.com as a Salesforce trusted URL.
• It says an outbound call should start with the Salesforce record already open, or the activity may log on the wrong record.
• If third-party cookies are blocked, that guide says to turn on Login using popup.
• Draw Connect and Flex as two products. Do not draw one arrow that claims a native connector.

Number on this page: Open CTI 2028-02-28. Retirement date on the Flex Salesforce page

Picture from this room.

1. Read Twilio. The Flex Salesforce guide.
2. Read AWS. Transfer to phone number is voice.
3. Do not merge. No connector page was opened.
4. Date. Open CTI retirement is on the Flex page.

What usually goes wrong: Telling a review that Amazon Connect includes Twilio because both products can place a call.

Integrate Flex with Salesforce community. last checked 2026-10

The prose is a study paraphrase. The link is the source of the facts.

Glossary

• Salesforce CTI Adapter A managed package plus a serverless app that embeds the CCP in Salesforce.
• SCC-AC Salesforce Contact Center with Amazon Connect. Voice stays on Connect. Messaging can be Connect or Salesforce.
• ServiceNow Voice The ServiceNow integration that imports flows, maps queues to Advanced Work Assignment, and can attach AI voice agents.
• Teams chat bridge A published pattern: a Teams app, Azure Bot Service, API Gateway, Lambda, and StartChatContact. It is chat, not a phone trunk.

Mind map

Open the Integrations mind map

Sister technologies

The CRM, the PBX, and the chat client each own a different seam. Mixing them up builds a transfer that pops the wrong record.

Config and troubleshooting

Telling a review that Amazon Connect includes Twilio because both products can place a call.

Salesforce and ServiceNow do not receive contact attributes unless you write them and call out. The association is what lets the flow invoke the function that sets the customer id.

IntegrationAssociation Lambda functions

Resources:
  PopAssociation:
    Type: AWS::Connect::IntegrationAssociation
    Properties:
      InstanceId: !GetAtt CampusInstance.Id
      IntegrationType: LAMBDA_FUNCTION
      IntegrationArn: !GetAtt ScreenPop.Arn

Integration map

Join records on ContactId. The integration map room lists the seams.

Cross-platform bridges

A CUCM calling search space is not a routing profile, but the profile is the closest idea of 'who can receive what'. A partition is not a Connect object. A UCCX CSQ and a UCCE skill group map to a queue. Precision steps map to routing criteria. A script, an Architect flow, and an Avaya vector map to a contact flow.

Open the mapping room

Future hooks

Hooks you can adopt later: EventBridge contact events, the CTR stream, agent events, Kinesis Video, Customer Profiles events, Cases, Show view, data tables, External Tool, and the flow language JSON in your pipeline. Live Sync and Agentic CX are the 2026 hooks for guided and agentic experiences.