Question 90
A principal solutions architect reviews an AWS application dependency, the decisive constraint is: A website requires fixed anycast ingress IPs plus health-based movement between regional ALBs. Which recommendation best addresses the actual bottleneck?
Explanation
Correct Answer
Use AWS Global Accelerator with regional endpoint groups and health checks. Global Accelerator exposes static anycast addresses and shifts new flows to healthy endpoints.
Incorrect Answers
Use Route 53 failover records with meaningful health checks and tested DNS behavior solves the related scenario A primary region's HTTPS endpoint fails and users must move to a healthy standby origin; failover routing selects the secondary when the primary is considered unhealthy.
Although Configure Route 53 weighted routing records for the planned traffic split can be valid when A controlled new regional launch should receive approximately 5% of DNS responses before broader adoption, it targets a different technical condition. Weighted DNS records distribute answer selection by relative record weights, though client caching affects actual request fractions.
Choose Route 53 geolocation routing with an explicit default record would address a different requirement: A multinational marketing site must select regional content origins using the country associated with its DNS queries. Geolocation routing selects DNS answers by estimated query origin and is not a substitute for strict end-user geofencing.