daily-email: add 2023-08-23

Don't use third-party services directly

src/content/daily-email/2023-08-23.md

@@ -0,0 +1,19 @@
+---
+title: >
+  Don't use third-party services directly
+pubDate: 2023-08-23
+permalink: >
+  archive/2023/08/23/dont-use-third-party-services-directly
+tags:
+  - automated-testing
+---
+
+If you need to integrate your application with a third-party service, don't integrate it directly - even if it has an SDK.
+
+Doing so locks you into a single implementation and a single vendor.
+
+If you write your own integration layer, it's possible to add multiple implementations, such as different payment gateways, that conform with a single interface.
+
+If you need to switch to a different provider or add multiple options, you can without changing the existing code.
+
+It also makes it easier to test as you can write a fake implementation and use it for testing.