How to implement serverless functions in a WeWeb application?

Step 1: Understand what Serverless Functions are

Before moving towards the implementation, it's crucial to comprehend what serverless functions are. In essence, these are small, self-contained pieces of logic or code that execute a specific function without needing an underlying server's resources. These run on cloud platforms, eliminating the need for server maintenance and administration.

In the context of a WeWeb application or any other web application, serverless functions are implemented mainly for things like reacting to HTTP requests, performing operations based on database actions, running scheduled tasks, etc. They can be written in many programming languages such as Node.js, Python, Java etc, based on the support provided by the cloud platform.

Step 2: Create a WeWeb Application

Before implementing serverless functions, you need to have a WeWeb application. You can create this in the WeWeb's design editor. Ensure you have a clear vision about the app's purpose, design, and features so you can create a more effective application.

Step 3: Create a Serverless Function

After you have a WeWeb application, the next step is creating a serverless function. Log in to your WeWeb dashboard, navigate to project settings and select the 'Functions' tab. From there, you'll see an option for serverless functions. Here, click on 'Create a new function'. You will be required to provide a name for your function and a version number.

Step 4: Write Your Function Code

Next, you must write the code for your function. As previously mentioned, your programming language choice depends on the supported languages of your serverless functions provider. Make certain that your function has a specific, single task.

Step 5: Test Your Function

After writing your function, it's a good practice to test it before deploying it. You can use unit tests or testing frameworks supported by the programming language you are using.

Step 6: Deploy Your Function

Once you’ve tested and found the function to be performing its task accurately, you can deploy it. The method for deployment may vary depending on your provider.

Step 7: Configure and Integrate with your WeWeb Application

After deployment, you need to integrate the function with your WeWeb Application. First, configure your function (set environment variables if needed, access settings etc) in the WeWeb Dashboard. Then, you should call this function from your WeWeb application where it's needed. The method to call your function will also depend on the language you're coding in and your API Gateway setup, if it exists.

Step 8: Monitor Your Function

Post-deployment, it will be essential to monitor your function continuously. This way, you can troubleshoot any issues that arise after the function starts integrating with other services. Use any logging and monitoring tools provided by your serverless platform.

Remember that implementing serverless functions requires careful planning and attention to detail. But once set up, they can reduce operational costs and resource usage while providing high performance, scalability and reliability.