EpiFive https://www.epifive.com Practical engineering guides on Microsoft 365, Entra ID, Azure, databases and system architecture — with the commands, configs and cutover plans included. en Sun, 11 Oct 2026 06:00:00 GMT Automate blog and social media posting with Claude, GitHub Actions and Make https://www.epifive.com/blog/automate-blog-social-media-posting-claude-github-actions https://www.epifive.com/blog/automate-blog-social-media-posting-claude-github-actions Sun, 11 Oct 2026 06:00:00 GMT AI engineering An architecture for publishing one researched article a day and turning it into a narrated vertical video for YouTube Shorts, Instagram, Facebook and LinkedIn, with the platform limits that shape it. Google Workspace to Microsoft 365 Migration: A Complete Technical Guide for Mail, Calendar, Contacts and Drive https://www.epifive.com/blog/google-workspace-to-m365-enterprise-migration-guide https://www.epifive.com/blog/google-workspace-to-m365-enterprise-migration-guide Mon, 03 Aug 2026 06:00:00 GMT Microsoft 365 A step-by-step guide to moving from Google Workspace to Microsoft 365 with Exchange Online's native Gmail migration and Migration Manager, from routing subdomains and service accounts to MX cutover. Microsoft 365 Tenant-to-Tenant Migration Architecture: Cross-Tenant Mailbox, OneDrive, Teams and Domain Move https://www.epifive.com/blog/m365-tenant-to-tenant-cross-tenant-migration-architecture https://www.epifive.com/blog/m365-tenant-to-tenant-cross-tenant-migration-architecture Mon, 03 Aug 2026 06:00:00 GMT Microsoft 365 A practical guide to Microsoft 365 tenant-to-tenant migration for mergers and divestitures: native cross-tenant mailbox and OneDrive moves, SharePoint, Teams and the domain cutover. Production LLMOps & Enterprise RAG: Low-Latency, Privacy-Preserving Architecture at Scale https://www.epifive.com/blog/production-llmops-enterprise-rag-architecture https://www.epifive.com/blog/production-llmops-enterprise-rag-architecture Fri, 28 Feb 2025 06:00:00 GMT AI engineering A blueprint for building accurate, privacy-preserving Retrieval-Augmented Generation (RAG) systems, covering hybrid dense-sparse search, cross-encoder re-ranking, semantic caching and latency tuning. Migrating Enterprise VMs to Azure: A Zero-Downtime Cutover Playbook and Runbook https://www.epifive.com/blog/enterprise-azure-cloud-migration-playbook https://www.epifive.com/blog/enterprise-azure-cloud-migration-playbook Tue, 25 Feb 2025 06:00:00 GMT Cloud & infrastructure An enterprise migration architecture and minute-by-minute cutover runbook for moving VMware virtual machines and multi-tier business applications to Microsoft Azure with minimal, planned downtime. Event-Driven Microservices at Scale: Apache Kafka vs AWS SQS/SNS vs RabbitMQ for High-Volume Transaction Systems https://www.epifive.com/blog/kafka-vs-rabbitmq-vs-aws-sqs-event-driven-architecture https://www.epifive.com/blog/kafka-vs-rabbitmq-vs-aws-sqs-event-driven-architecture Sat, 22 Feb 2025 06:00:00 GMT Architecture An architectural trade-off analysis of Kafka, RabbitMQ and AWS SQS for transaction-processing workloads, covering rebalance storms, poison-pill DLQ topologies and idempotent consumer design. Decommissioning Legacy VPNs: A Zero-Trust Remote Access Architecture for the Enterprise https://www.epifive.com/blog/zero-trust-enterprise-remote-access-architecture https://www.epifive.com/blog/zero-trust-enterprise-remote-access-architecture Tue, 18 Feb 2025 06:00:00 GMT Security & identity A reference architecture for replacing castle-and-moat VPN perimeters with identity-centric Zero Trust using Microsoft Entra ID P2, Zscaler Private Access and Continuous Access Evaluation. PostgreSQL High Availability: A Production Manual for Patroni, etcd v3, HAProxy and PgBouncer https://www.epifive.com/blog/postgresql-high-availability-patroni-etcd-haproxy https://www.epifive.com/blog/postgresql-high-availability-patroni-etcd-haproxy Sat, 15 Feb 2025 06:00:00 GMT Databases & HA How to build a PostgreSQL HA cluster with automatic failover and synchronous replication using Patroni, an etcd DCS, HAProxy health-check routing and PgBouncer connection pooling.