---
title: "Create a Lambda function"
canonical: "https://docs.infoblox.com/space/DeploymentGuideIntegratingB1TDwithAWSRoute53/664338670/Create%20a%20Lambda%20function"
format: markdown
---
To import TIDE feeds into the AWS Route 53 Domain list, API calls must be made. This is easily done via a previously created Python script which can be added to AWS as a Lambda function.
**Please note that the script replaces any existing domains in the domain list it is interacting with. If desired, you may alter the script to append instead of replace.**
To download this script, perform the following steps:
1. Navigate to [https://github.com/infobloxopen/outbound-notifications/blob/main/AWS/tide_to_r53_dnsfw.py](https://github.com/infobloxopen/outbound-notifications/blob/main/AWS/tide_to_r53_dnsfw.py) in your web browser of choice.
2. **Copy** the Python script and** save** it to a text file.
1. Back in the AWS console, input **Lambda** into the *search bar* located at the top of the AWS interface.
2. Locate and click on** Lambda** to navigate to the *Lambda* page.
3. On the *AWS Lambda functions* page, click **Create function**.
4. On the *Create function* page, configure the following settings:
- Click the **Author from scratch **bubble.
- Give the Function a **name**.
5. Select **Python 3.8** via the *Runtime* drop-down menu.
6. Keep all other settings as their default and click **Create function**.
7. On the* Functions* page, locate and click the **Lambda function** you’ve just created.
8. Once on the Lambda function’s page, **delete** all text located in the code editor.
9. **Paste** the code acquired previously in this section on page 36.
10. To deploy the code, click the **Deploy** button located above the code editor.
11. On the Lambda function’s page, click the** Configuration** tab.
12. On the *Configuration* page, click **Environment variables** in the navigation panel.
13. Edit the *Environment Variables* by clicking the **Edit** button located in the middle of the Environment variables panel.
14. On the Edit environment variables page, click** Add environment variable**.
15. In the first *Environment Variable*, input **CSP_API_KEY** in the** Key** text field.
16. Input the **CSP API key** that was acquired on *[pages 35-36](https://docs.google.com/document/d/1Pj7QxwgJf_ko0bxtnYiN0NfRd2UE07ZR/edit#heading=h.3tbugp1)* in the **Value** text field.
17. Click **Add environment variable** to add an additional environment variable.
18. In the second *Environment Variable*, input **DNSFW_LISTID** in the** Key** text field.
19. Input the **AWS Route 53 DNS Firewall domain list ID** that was acquired on *[page 49](https://docs.google.com/document/d/1Pj7QxwgJf_ko0bxtnYiN0NfRd2UE07ZR/edit#heading=h.2grqrue)* in the **Value** text field.
20. Click **Add environment variable** to add an additional environment variable.
21. In the third *Environment Variable*, input **S3BUCKET** in the** Key** text field.
22. Input the **S3 Bucket name** that was created on *[page 43](https://docs.google.com/document/d/1Pj7QxwgJf_ko0bxtnYiN0NfRd2UE07ZR/edit#heading=h.32hioqz)* in the **Value** text field.
23. Click **Add environment variable** to add an additional environment variable.
24. In the fourth *Environment Variable*, input **S3FILE** in the** Key** text field.
25. Input the **S3 file name** that was created on *[page 45](https://docs.google.com/document/d/1Pj7QxwgJf_ko0bxtnYiN0NfRd2UE07ZR/edit#heading=h.32hioqz)* in the **Value** text field.
26. Click **Add environment variable** to add an additional environment variable.
27. In the fifth *Environment Variable*, input **SEARCH** in the** Key** text field.
28. Input the **TIDE API call** that was created on *[pages 46-48](https://docs.google.com/document/d/1Pj7QxwgJf_ko0bxtnYiN0NfRd2UE07ZR/edit#heading=h.41mghml)* in the **Value** text field.
- After inputting all of your environment variables, they should look similar to this screenshot:
29. Click** Save** to confirm the addition of the newly created environment variables.
