For Hubspot's freemium and fully automated (touchless) software business, how can one achieve the highest growth in the least amount of time while being VC-backed? Brian Balfour's answer is the Four Fits Model: the four factors of product, market, channel, and model are interlinked and must work together.

Most products from Silicon Valley companies target the global market, and internationalization is a strategic key for multinational companies venturing into this market. The i18n engineering solution we designed primarily addresses three major issues in the development process of websites and mobile apps: 1. Language, 2. Time and Time Zones, 3. Numbers and Currency. Like all software system development, there is no silver bullet for internationalization; great works are crafted through diligent foundational work.

Large-scale web services deal with high-volume traffic, but one host could only serve a limited amount of requests. There is usually a server farm to take the traffic altogether. How to route them so that each host could evenly receive the request?

Internet services often need to handle traffic from around the world, but a single server can only serve a limited number of requests at the same time. Therefore, we typically have a server cluster to collectively manage this traffic. The question arises: how can we evenly distribute this traffic across different servers?

Five concurrency models you may want to know: Single-threaded; Multiprocessing and lock-based concurrency; Communicating Sequential Processes (CSP); Actor Model (AM); Software Transactional Memory (STM).

Technology and politics are two forces that influence supply chains. In the context of global industrialization driven by technological change, developed countries provide technology while developing countries offer cheap labor. Companies consider two main points when transforming their supply chains: the risks associated with reducing supply chain costs and the increased availability of products and services due to global trade.

How to design a realtime typeahead autocomplete service? Linkedin's Cleo lib answers with a multi-layer architecture (browser cache / web tier / result aggregator / various typeahead backend) and 4 elements (inverted / forward index, bloom filter, scorer).

To achieve a higher ROI in advertising, Lyft launched a marketing automation platform, which consists of three main components: lifetime value forecaster, budget allocator, and bidders.

For guests and hosts, we store data with a relational database and build indexes to search by location, metadata, and availability. We can use external vendors for payment and remind the reservations with a priority queue.

Memcached = rich client + distributed servers + hash table + LRU. It features a simple server and pushes complexity to the client) and hence reliable and easy to deploy.

How can advertising campaigns achieve higher returns with less money and fewer people? Lyft's answer is automation, which includes an LTV prediction module, a budget allocation module, and a delivery module. When people are freed from tedious delivery tasks and can focus on understanding users, channels, and the messages they need to convey to their audience, they can achieve better campaign results.