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"Subscribed for quick summaries of topics. Saves time. Googling and Youtube and collating info isn't convenient."

— RB

Technically

Making practical sense of software and AI.

AI
Recent Articles

What’s an inference provider?

How the rise of open source AI models is fueling the growth of a new infrastructure category.

I Let Claude Code Autonomously Run Ads for a Month

Applying the Ralph Wiggum loop to things other than writing code.

How AI content detectors work

Learn how AI detectors work

AI Reference

Prompt Engineering

Prompt engineering is the art of talking to AI models in a way that gets you the results you actually want.

Token

A token is the basic unit of a Large Language Model's vocabulary.

Terms

Post-training

LLM post-training turns a model from a knowledgeable blob that produces rambling answers, into a helpful assistant.

Loss Function

When training a machine learning model, a loss function is something you design that tells the model when its answers are right and when they're wrong.

All AI →
Analytics
Recent Articles

Databricks is apparently worth $100B. What do they even do?

What we should really be asking is “What does Databricks not do?”

What does Alteryx do?

Alteryx is a group of tools that helps business teams get insights out of their data, without needing to write any code.

What's a Data Migration?

Data migration is about transferring information (data) from one place to another.

Terms

Analytics

Analytics just means trying to use data to learn something.

Product analytics

Product analytics is the process of companies figuring out what users are actually doing in their product, with the goal of improving it.

Companies
Snowflake

Snowflake

Snowflake sells a powerful cloud data warehouse for analytics and data science teams.

OpenAI

OpenAI

OpenAI is the most popular provider of generative AI models like GPT-4.

All Analytics →
Databases
Recent Articles

Why do developers choose different types of databases?

An intro to how companies like Elastic, MongoDB, Snowflake, Confluent and AWS compete.

Terms

Database

A database is just a place to store data; even Excel is technically a database.

Query

A query is how talk to your database.

Companies
MongoDB

MongoDB

MongoDB is a highly popular unstructured, NoSQL document database for powering your applications.

Elastic

Elastic

Elasticsearch is a popular open source database for storing and searching unstructured data.

All Databases →
DevOps
Recent Articles

A Beginner’s Guide to Bring Your Own Cloud

The profitable but challenging deployment model sweeping the nation.

What's documentation?

How companies like Stripe win by writing better product docs, and where platforms like GitBook can help.

Developers hate this one thing (all about code reviews)

A deep dive into why code reviews take so long, how AI tools like CodeRabbit are speeding them up, and what great teams do to ensure clean code.

Terms

Kubernetes

Developers use Kubernetes to turn their individual containers and virtual machines into full fledged, working applications.

Port

Computers have digital ports – literally, like for a boat – for other computers to connect to over a network.

Companies
Vercel

Vercel

Vercel builds the AI cloud – they make it easy for engineers to deploy and run the user facing (frontend) + AI parts of their applications.

Twilio

Twilio

Twilio makes a suite of products that helps you communicate with your customers via SMS, video, calls, and more.

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Security
Terms

VPN

A Virtual Private Network (VPN) lets you route your internet access through a specialized server that keeps your sensitive information private.

Tokenization

Tokenization is one of the ways that backends protect sensitive information, like credit cards or social security numbers.

Companies
Okta

Okta

Okta is an enterprise-focused identity provider: they take care of managing usernames, passwords, and permissions.

Snyk

Snyk

Snyk helps developers make sure that the code they're writing is secure.

All Security →

"Technically has allowed me better bridge the gap between user problems and how our system works under the hood."

— Adelaide Hallowell

Latest
When not to vibe code

When not to vibe code

Should I ship something myself, or call in engineering help?

Sarah Krasnik BedellSarah Krasnik Bedell

Recent

What’s an inference provider?

How the rise of open source AI models is fueling the growth of a new infrastructure category.

Will RaphaelsonWill Raphaelson

I Let Claude Code Autonomously Run Ads for a MonthFree

Applying the Ralph Wiggum loop to things other than writing code.

A Beginner’s Guide to Bring Your Own Cloud

The profitable but challenging deployment model sweeping the nation.

Will RaphaelsonWill Raphaelson

How AI content detectors workFree

Learn how AI detectors work

Christy BieberChristy Bieber
AI ReferenceSee all →

The guide to AI that you've been looking for. Click on any term for an in depth explanation.

GPU (Graphics Processing Unit)GPUs are specialized chips that do thousands of simple calculations simultaneously, making them perfect for AI training Loss FunctionA loss function is something you design that tells the model when its answers are right and when they're wrong.Pre-TrainingPre-training is the "undergrad degree" phase where the model builds its foundational knowledge and world model.TrainingTraining is the process of creating an AI model and teaching it how to actually do something useful.
What are prediction markets?

What are prediction markets?Free

What are prediction markets and how much revenue is Kalshi really making?

Sam SchneiderSam Schneider
What's a Forward Deployed Engineer?

What's a Forward Deployed Engineer?Free

And why is every startup around following the Palantir model?

Sung Won ChungSung Won Chung
What's a datacenter?

What's a datacenter?

What actually goes on inside the buildings propping up the US economy.

Will RaphaelsonWill Raphaelson
AI and the — em dash

AI and the — em dash

Finally, an explanation for why AI models can't seem to quit them.

Christy BieberChristy Bieber
CompaniesSee all →

What their products actually do and why they're so valuable.

DatadogDatadog
Datadog is monitoring software - developers use it to get operational visibility into their servers and applications.
dbt Labsdbt Labs
dbt (no capitals) is a tool for transforming and organizing data in your warehouse.
DigitalOceanDigitalOcean
DigitalOcean is an independent infrastructure as a service provider; you can think of them as AWS or GCP, but for the people.
OpenAIOpenAI
OpenAI is the most popular provider of generative AI models like GPT-4.
GlossarySee all →

Quick explanations of the concepts you see every day.

API callsWhen you give an API a bunch of inputs to get the outputs you want, it’s called calling the API.RAM, memoryRAM stands for Random Access Memory, and it’s the remedy to Disk being slow: it’s much faster “memory” that computers use for things like intermediate storage (storing the result of a calculation temporarily).ScriptA script is a term developers use to refer to a file of code that does something scoped and specific: to be distinguished from an app or a system, which is probably many files and does a lot more.SSHThe Secure Shell Protocol is a (popular) way to securely connect to computers over the internet, usually in the context of powerful servers in the cloud.

Video

Analyzing all 203 million trades on Kalshi

Analyzing all 203 million trades on Kalshi

Kalshi just raised a new round at an $11B valuation. How much revenue does their prediction market really make?

Sam SchneiderSam Schneider
Relationships are the moat

Relationships are the moat

What's the forward deployed engineer role, and why is every startup hiring them?

Sung Won ChungSung Won Chung
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Contributors

Christy BieberChristy BieberJustin GageJustin GageKenny NingKenny NingSachin BennySachin BennySam SchneiderSam SchneiderSarah Krasnik BedellSarah Krasnik BedellSung Won ChungSung Won ChungWill RaphaelsonWill Raphaelson

Learning Tracks

Curated collections of foundational articles to guide you through the basics of getting more technical at work.

AI, it's not that complicated ↗

How to understand and work effectively with AI and ML models and products.

  • How do Large Language Models work?

    Breaking down what ChatGPT and others are doing under the hood

  • What's RLHF?

    How AI models learned to stop being weird and start being helpful.

  • What's GPT-3?

    GPT-3 is a Machine Learning model that generates text.

  • What’s a data science notebook?

    Data Science Notebooks help data teams explore data with code.

Analyzing Software Companies ↗

The products and business models of leading software companies.

  • Databricks is apparently worth $100B. What do they even do?

    What we should really be asking is “What does Databricks not do?”

  • What does Snowflake do?

    Snowflake sells a powerful cloud data warehouse for analytics and data science teams.

  • What does OpenAI do?

    OpenAI is the most popular provider of generative AI models like GPT-4.

  • What does dbt do?

    dbt (no capitals) is a tool for transforming and organizing data in your warehouse.

Building Software Products ↗

How to make positive contributions to your product roadmap.

  • The top 5 things PMs should know about engineering

    Engineering and code basics that can make you a better PM to work with.

  • What's code?

    Code is step by step directions, but for computers.

  • What's the internet?

    A network of computers all connected to each other and sharing information.

  • What's cloud?

    Cloud is how companies rent infrastructure over the internet.

From Spreadsheets to Databases ↗

You've outgrown Excel, but you've got to put that data somewhere besides your parents basement.

  • The Beginner's Guide to Databases

    There are 300+ databases; what do they all do?

  • SQL for the rest of us

    If you’re not a data scientist but you have questions, you want to know SQL.

  • The Excel User's Guide to Databases: Schemas

    Why that schema change is going to take your engineers two weeks.

  • The Excel User's Guide to Databases: Migrations

    Why your feature is held up by a migration and why this is actually good.

How AI Models Actually Work ↗

How do these things actual work under the hood? What does it mean to train one? Is it more like going to the gym, studying for a test, or sleeping?

  • What is Machine Learning?

    How computers learn patterns from data: the foundation for everything from stock price prediction to ChatGPT.

  • How do Large Language Models work?

    Breaking down what ChatGPT and others are doing under the hood

  • How do you train an AI model?

    A deep dive into how models like ChatGPT get built.

  • The beginner’s guide to AI model architectures

    Unlike an onion, hopefully these neural network layers won't make you cry.

Working With Data Teams ↗

How to make positive contributions when working with analytics and data science teams.

  • How do product analytics work?

    Product analytics is how teams instrument and analyze data about their product usage.

  • What your data team is using: the analytics stack

    A deep dive into all of the tools that data teams use to do their work.

  • SQL for the rest of us

    If you’re not a data scientist but you have questions, you want to know SQL.

  • What's the Modern Data Stack?

    The new set of tools data teams use to get their jobs done.

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— RB

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— Kevin Sullivan

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— Erik Steiner

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