Add V2.5 architecture diagrams (smartcontractkit#1972)

* Add V2.5 architecture diagrams

* fix link

src/content/vrf/v2-5/overview/direct-funding.mdx

@@ -27,7 +27,9 @@ Unlike the [subscription method](/vrf/v2-5/overview/subscription), the direct fu
 
 ## Request and receive data
 
-Requests to Chainlink VRF v2.5 follow the [request and receive data cycle](/vrf/v2/direct-funding#request-and-receive-data) similarly to VRF V2.
+Requests to Chainlink VRF v2.5 follow the request and receive data cycle similarly to VRF V2. This end-to-end diagram shows each step in the lifecycle of a VRF direct funding request:
+
+<ClickToZoom src="/images/vrf/v2-5/direct-funding-architecture-diagram.png" />
 
 Two types of accounts exist in the Ethereum ecosystem, and both are used in VRF:
 

src/content/vrf/v2-5/overview/subscription.mdx

@@ -50,7 +50,9 @@ The gas price depends on current network conditions. The callback gas depends on
 
 ## Request and receive data
 
-Requests to Chainlink VRF v2.5 follow the request and receive data cycle similarly to [VRF V2](/vrf/v2/subscription#request-and-receive-data).
+Requests to Chainlink VRF v2.5 follow the request and receive data cycle similarly to VRF V2. This end-to-end diagram shows each step in the lifecycle of a VRF subscription request, and registering a smart contract with a VRF subscription account:
+
+<ClickToZoom src="/images/vrf/v2-5/subscription-architecture-diagram.png" />
 
 <Aside type="tip" title="Account types used in VRF">
 Two types of accounts exist in the Ethereum ecosystem, and both are used in VRF: