adding page

Author: idalithb

website/next-env.d.ts

@@ -2,4 +2,4 @@
 /// <reference types="next/image-types/global" />
 
 // NOTE: This file should not be edited
-// see https://nextjs.org/docs/pages/building-your-application/configuring/typescript for more information.
+// see https://nextjs.org/docs/basic-features/typescript for more information.

website/pages/en/_meta.js

@@ -18,6 +18,7 @@ export default {
     title: 'Subgraphs',
   },
   'quick-start': '',
+  subgraphs: '',
   developing: 'Developing',
   deploying: 'Deploying',
   publishing: 'Publishing',

website/pages/en/subgraphs.mdx

@@ -0,0 +1,42 @@
+---
+title: Subgraphs
+---
+
+## What is a Subgraph?
+
+A custom, open API that extracts data from a blockchain, processes it, and stores it so it can be easily queried via GraphQL.
+
+### Subgraphs Capabilities
+
+- Developers can build, deploy, and publish subgraphs to The Graph Network.
+  - To get started, check out the subgraph developer [Quick Start](quick-start/).
+- Once a subgraph is indexed, anyone can query it.
+- Explore and query all subgraphs published to the network in [Graph Explorer](https://thegraph.com/explorer).
+
+## Inside a Subgraph
+
+The subgraph manifest, `subgraph.yaml`, defines the smart contracts & network your subgraph will index, the events from these contracts to pay attention to, and how to map event data to entities that Graph Node stores and allows to query.
+
+The **subgraph definition** consists of the following files:
+
+- `subgraph.yaml`: Contains the subgraph manifest
+
+- `schema.graphql`: A GraphQL schema defining the data stored for your subgraph and how to query it via GraphQL
+
+- `mapping.ts`: [AssemblyScript Mappings](https://github.com/AssemblyScript/assemblyscript) code that translates event data into entities defined in your schema (e.g. `mapping.ts` in this guide)
+
+To learn more about each of subgraph component, check out [creating a subgraph](/developing/creating-a-subgraph/).
+
+## Subgraph Development
+
+1. [Create a subgraph](/developing/creating-a-subgraph/)
+2. [Deploy a subgraph](/deploying/deploying-a-subgraph-to-studio/)
+3. [Test a subgraph](/deploying/subgraph-studio/#testing-your-subgraph-in-subgraph-studio)
+4. [Publish a subgraph](/publishing/publishing-a-subgraph/)
+5. [Signal on a subgraph](/publishing/publishing-a-subgraph/#adding-signal-to-your-subgraph)
+
+## Subgraph Lifecycle
+
+Here is a general overview of a subgraph’s lifecycle:
+
+![Subgraph Lifecycle](/img/subgraph-lifecycle.png)